WO1996015708A1 - A vacuum cleaner and a filter assembly therefor - Google Patents

A vacuum cleaner and a filter assembly therefor Download PDF

Info

Publication number
WO1996015708A1
WO1996015708A1 PCT/GB1995/002722 GB9502722W WO9615708A1 WO 1996015708 A1 WO1996015708 A1 WO 1996015708A1 GB 9502722 W GB9502722 W GB 9502722W WO 9615708 A1 WO9615708 A1 WO 9615708A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum cleaner
filters
filter assembly
motor
fan unit
Prior art date
Application number
PCT/GB1995/002722
Other languages
French (fr)
Inventor
James Dyson
Original Assignee
Notetry Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Notetry Limited filed Critical Notetry Limited
Priority to EP95937962A priority Critical patent/EP0793437B1/en
Priority to DE69507836T priority patent/DE69507836T2/en
Priority to JP51667696A priority patent/JP3547447B2/en
Priority to AU38779/95A priority patent/AU690369B2/en
Publication of WO1996015708A1 publication Critical patent/WO1996015708A1/en
Priority to US09/120,252 priority patent/US6010561A/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/12—Dry filters
    • A47L9/122—Dry filters flat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/03—Vacuum cleaner

Definitions

  • the invention relates to a vacuum cleaner and to a filter assembly therefor. It will be understood that the term "vacuum cleaner” is here used so as to encompass any type of cleaning apparatus which uses the creation of a vacuum to draw air along an airflow path.
  • Vacuum cleaners of both the upright and cylinder types operate by utilising a motor or fan unit to draw air along an airflow path from a dirty air inlet to a clean air outlet via some sort of filtering or dirt/dust separating apparatus. The air which passes along the airflow path thus passes through the motor or fan unit.
  • the invention provides a vacuum cleaner as claimed in claim 1 and also a filter assembly as claimed in claim 8. Advantageous features are set out in the subsidiary claims.
  • Figures 1 and 2 each show schematic side views of a motor or fan unit forming part of a vacuum cleaner according to the present invention.
  • FIG. 1 and 2 shows, in schematic side view, a motor or fan unit 10 having an airflow path 18 passing therethrough. The direction of airflow is shown by arrows 20.
  • Each motor or fan unit is of conventional design and manufacture and will not be described further here.
  • an electrostatic filter 12 Immediately upstream of the motor 10 and covering the entry of the airflow path 18 into the motor 10 is an electrostatic filter 12.
  • a second electrostatic filter 14 is located immediately downstream of the motor 10 in the airflow path 18.
  • a connecting member 16 extends between the filters 12, 14 thus forming a connection therebetween.
  • the electrostatic filters 12, 14 are of standard design and manufacture. However, it will be understood that alternative types of filter suitable for use in vacuum cleaners can be utilised.
  • the connecting member 16 can be rigid or non-rigid and can be formed, if desired, from a single piece of material, e. g. a plastics material, or can be manufactured from a plurality of separate parts. A resilient or hinged construction is preferable for ease of packaging, storage and transportation.
  • the connecting member 16 may be shaped to closely conform to the shape of the outer casing of the motor 10 or may be specifically designed to provide the user of the vacuum cleaner with a gripping portion or handle so as to facilitate the removal and replacement of the filters 12, 14.
  • connection between the connecting member 16 and the filters 12, 14 may be permanent or temporary.
  • the connecting member 16 can also be formed from the same material to produce an integral, one-piece filter assembly.
  • the connecting member 16 may be formed integrally with the filter casings, filter material being inserted into each of the filter casings. In either case, when replacement of the filters 12, 14 is required, the entire filter assembly 12, 14, 16 is discarded and replaced by a new assembly.
  • the connecting member 16 can be of a more durable nature so that, if desired, the filters 12, 14 can be removed from the connecting element 16 and replaced with new filters before the filter assembly 12, 14, 16 is re-fitted into the vacuum cleaner.
  • the connecting member 16 is formed from the same filter material as that used to form the filters 12, 14, the complete assembly may be shaped such that the portion of filter material forming the connecting member 16 is narrower than the portions forming the filters 12, 14. Equally, the connecting portion need not be shaped and the whole assembly may be generally rectangular in shape so as to merely "wrap around" the motor or fan unit 10 such that the inlet and outlet of the unit 10 are overlaid by filter material.
  • the motor 10 is located in a vacuum cleaner so that, when the dirt/dust collection means are removed for emptying or replacement, at least part of the filter assembly 12, 14, 16 is clearly visible by the user. Ideally, at least one of the filters 12, 14 is clearly visible in this situation.
  • the arrangement illustrated in Figure 2 it is possible and advantageous for the arrangement to be such that both filters 12, 14 are visible during emptying or replacement of the dirt/dust collection means. This is highly advantageous in that the user of the vacuum cleaner is reminded, each time the dirt/dust collecting apparatus is emptied or replaced, to check that the filters do not require replacement. Easy accessibility of the filters 12, 14 encourages the user of the vacuum cleaner to replace the filters 12, 14 as and when necessary.
  • the presence of a connecting member 16 between the filters 12, 14 means that, automatically, both filters 12, 14 are removed when a check is carried out. This avoids any possibility of the more accessible filter being properly maintained whilst the less accessible filter is neglected. If either of the filters 12, 14 becomes blocked, the effect on the performance of the vacuum cleaner will be adverse.

Abstract

The invention provides a vacuum cleaner comprising an airflow path (18), dirt and dust collecting means arranged in the airflow path (18), a motor or fan unit (10) for causing air to flow along the airflow path (18) and, also arranged therein, a first filter (12) arranged immediately upstream of the motor or fan unit (10) and a second filter (14) arranged downstream of the motor or fan unit (10), wherein the first and second filters (12, 14) are connected together so as to form a single filter assembly. The invention also provides a filter assembly for use in such a vacuum cleaner. The connection of the filters (12, 14) encourages the user of the vacuum cleaner to regularly maintain both filters (12, 14), thus improving the performance of the vacuum cleaner.

Description

A VACUUM CLEANER AND A FILTER ASSEMBLY THEREFOR
The invention relates to a vacuum cleaner and to a filter assembly therefor. It will be understood that the term "vacuum cleaner" is here used so as to encompass any type of cleaning apparatus which uses the creation of a vacuum to draw air along an airflow path.
Vacuum cleaners of both the upright and cylinder types operate by utilising a motor or fan unit to draw air along an airflow path from a dirty air inlet to a clean air outlet via some sort of filtering or dirt/dust separating apparatus. The air which passes along the airflow path thus passes through the motor or fan unit.
It is known to filter the air passing along the airflow path before it is expelled to the atmosphere. If the appropriate filter is located upstream of the motor or fan unit, any particles of dirt, carbon, etc becoming entrained within the airflow inside the motor or fan unit will inevitably be expelled into the atmosphere with the airflow. If the filter is located downstream of the motor or fan unit, any dirt or dust remaining in the airflow after it has passed through the filtering or dirt/dust separating apparatus will pass through the motor or fan unit. This may cause the motor or fan unit to become unbalanced which will shorten its life and may result in premature failure. Also, dust can collect and build up in the region of the motor or fan unit which can result in sudden unwanted releases of large quantities of fine dust which can cause blockage of the filter or damage the motor or fan unit.
A very few manufacturers have, prior to the date of this application, been fitting electrostatic filters both before and after the motor or fan unit. This has the advantage of preventing dusty air from passing through the motor or fan unit and also of preventing any particles released within the motor or fan unit from escaping into the atmosphere. However, two problems have been identified in respect of this arrangement. Firstly, even if the operator remembers to change one of the filters, the second filter is rarely changed. Presumably this is because changing the first filter gives the operator sufficiently improved performance for the changing of the second filter to be thought unnecessary or else the second filter is forgotten. Secondly, the operator has difficulty in ascertaining that the filters require changing because they are not easily visible.
It is an object of the present invention to provide a vacuum cleaner having filters arranged both before and after the motor or fan unit which is easy and convenient to operate and to maintain. The invention provides a vacuum cleaner as claimed in claim 1 and also a filter assembly as claimed in claim 8. Advantageous features are set out in the subsidiary claims.
An embodiment of the invention will now be described with reference to the accompanying drawings wherein:
Figures 1 and 2 each show schematic side views of a motor or fan unit forming part of a vacuum cleaner according to the present invention.
Each of Figures 1 and 2 shows, in schematic side view, a motor or fan unit 10 having an airflow path 18 passing therethrough. The direction of airflow is shown by arrows 20. Each motor or fan unit is of conventional design and manufacture and will not be described further here.
Immediately upstream of the motor 10 and covering the entry of the airflow path 18 into the motor 10 is an electrostatic filter 12. A second electrostatic filter 14 is located immediately downstream of the motor 10 in the airflow path 18. A connecting member 16 extends between the filters 12, 14 thus forming a connection therebetween.
The electrostatic filters 12, 14 are of standard design and manufacture. However, it will be understood that alternative types of filter suitable for use in vacuum cleaners can be utilised. The connecting member 16 can be rigid or non-rigid and can be formed, if desired, from a single piece of material, e. g. a plastics material, or can be manufactured from a plurality of separate parts. A resilient or hinged construction is preferable for ease of packaging, storage and transportation. The connecting member 16 may be shaped to closely conform to the shape of the outer casing of the motor 10 or may be specifically designed to provide the user of the vacuum cleaner with a gripping portion or handle so as to facilitate the removal and replacement of the filters 12, 14.
The connection between the connecting member 16 and the filters 12, 14 may be permanent or temporary. For example, in the event that a suitable filter material is used for the filters 12, 14, the connecting member 16 can also be formed from the same material to produce an integral, one-piece filter assembly. Alternatively, the connecting member 16 may be formed integrally with the filter casings, filter material being inserted into each of the filter casings. In either case, when replacement of the filters 12, 14 is required, the entire filter assembly 12, 14, 16 is discarded and replaced by a new assembly. As a further alternative, the connecting member 16 can be of a more durable nature so that, if desired, the filters 12, 14 can be removed from the connecting element 16 and replaced with new filters before the filter assembly 12, 14, 16 is re-fitted into the vacuum cleaner. If the connecting member 16 is formed from the same filter material as that used to form the filters 12, 14, the complete assembly may be shaped such that the portion of filter material forming the connecting member 16 is narrower than the portions forming the filters 12, 14. Equally, the connecting portion need not be shaped and the whole assembly may be generally rectangular in shape so as to merely "wrap around" the motor or fan unit 10 such that the inlet and outlet of the unit 10 are overlaid by filter material.
Although not shown in Figure 1 and 2, the motor 10 is located in a vacuum cleaner so that, when the dirt/dust collection means are removed for emptying or replacement, at least part of the filter assembly 12, 14, 16 is clearly visible by the user. Ideally, at least one of the filters 12, 14 is clearly visible in this situation. When the arrangement illustrated in Figure 2 is utilised, it is possible and advantageous for the arrangement to be such that both filters 12, 14 are visible during emptying or replacement of the dirt/dust collection means. This is highly advantageous in that the user of the vacuum cleaner is reminded, each time the dirt/dust collecting apparatus is emptied or replaced, to check that the filters do not require replacement. Easy accessibility of the filters 12, 14 encourages the user of the vacuum cleaner to replace the filters 12, 14 as and when necessary. Also, the presence of a connecting member 16 between the filters 12, 14 means that, automatically, both filters 12, 14 are removed when a check is carried out. This avoids any possibility of the more accessible filter being properly maintained whilst the less accessible filter is neglected. If either of the filters 12, 14 becomes blocked, the effect on the performance of the vacuum cleaner will be adverse.
It will be appreciated by a reader skilled in the art that the invention is not restricted to the specific embodiment described above.

Claims

CLAI MS
1. A vacuum cleaner comprising an airflow path, dirt and dust collecting means arranged in the airflow path, a motor or fan unit for causing air to flow along the airflow path and also arranged therein, a first filter arranged immediately upstream of the motor or fan unit and a second filter arranged downstream of the motor or fan unit, wherein the first and second filters are connected together so as to form a single filter assembly.
2. A vacuum cleaner as claimed in claim 1, wherein the single filter assembly is located in the vacuum cleaner so as to be visible at least in part when, in use, the dirt and dust collecting means are made accessible or removed for emptying or replacement.
3. A vacuum cleaner as claimed in claim 2, wherein the vacuum cleaner is a cylinder-type vacuum cleaner having a movable cover and the single filter assembly is made visible by opening the cover.
4. A vacuum cleaner as claimed in any one of the preceding claims, wherein the filters are electrostatic filters.
5. A vacuum cleaner as claimed in any one of the preceding claims, wherein the filters are connected by means of a rigid connecting member.
6. A vacuum cleaner as claimed in any one of claims 1 to 4, wherein the filters are connected by means of a resilient connecting member.
7. A vacuum cleaner substantially as hereinbefore described with reference to Figures 1 and 2 of the accompanying drawings.
8. A filter assembly for use in a vacuum cleaner according to any one of the preceding claims, comprising a first filter for location in an airflow path upstream of a motor or fan unit and a second filter for location in the airflow path downstream of the motor or fan unit, wherein the first and second filters are connected together to form a single filter assembly.
9. A filter assembly as claimed in claim 8, wherein the filters are connected by means of a rigid connecting member.
10. A filter assembly as claimed in claim 8, wherein the filters are connected by means of a resilient connecting member.
11. A filter assembly as claimed in any one of claims 8 to 10, wherein the filters are electrostatic filters.
12. A filter assembly substantially as hereinbefore described with reference to the accompanying drawings.
PCT/GB1995/002722 1994-11-19 1995-11-22 A vacuum cleaner and a filter assembly therefor WO1996015708A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP95937962A EP0793437B1 (en) 1994-11-24 1995-11-22 A vacuum cleaner and a filter assembly therefor
DE69507836T DE69507836T2 (en) 1994-11-24 1995-11-22 FILTER ARRANGEMENT FOR A VACUUM CLEANER
JP51667696A JP3547447B2 (en) 1994-11-24 1995-11-22 Vacuum cleaner and filter assembly therefor
AU38779/95A AU690369B2 (en) 1994-11-24 1995-11-22 A vacuum cleaner and a filter assembly therefor
US09/120,252 US6010561A (en) 1994-11-19 1998-07-21 Vacuum cleaner and a filter assembly therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9423756A GB2295311A (en) 1994-11-24 1994-11-24 Filter assembly for vacuum cleaner
GB9423756.7 1994-11-24

Publications (1)

Publication Number Publication Date
WO1996015708A1 true WO1996015708A1 (en) 1996-05-30

Family

ID=10764933

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/GB1995/002722 WO1996015708A1 (en) 1994-11-19 1995-11-22 A vacuum cleaner and a filter assembly therefor
PCT/GB1995/002723 WO1996015709A1 (en) 1994-11-24 1995-11-22 A vacuum cleaner and a filter assembly therefor

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/002723 WO1996015709A1 (en) 1994-11-24 1995-11-22 A vacuum cleaner and a filter assembly therefor

Country Status (11)

Country Link
US (1) US5840103A (en)
EP (2) EP0793438B1 (en)
JP (2) JPH10509068A (en)
AR (1) AR000491A1 (en)
AU (2) AU690369B2 (en)
CA (2) CA2221500A1 (en)
DE (2) DE69507631T2 (en)
GB (1) GB2295311A (en)
HK (1) HK1002747A1 (en)
MY (1) MY113412A (en)
WO (2) WO1996015708A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005051155A1 (en) 2003-11-28 2005-06-09 Aktiebolaget Electrolux Vacuum cleaner filtration system

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324956A (en) * 1997-05-06 1998-11-11 Notetry Ltd Motor for domestic appliance
GB9817071D0 (en) 1997-11-04 1998-10-07 Bhr Group Ltd Cyclone separator
GB9817073D0 (en) 1997-11-04 1998-10-07 Bhr Group Ltd Phase separator
GB9726676D0 (en) 1997-12-17 1998-02-18 Notetry Ltd A vacuum cleaner
US6183527B1 (en) * 1998-02-02 2001-02-06 Black & Decker Inc. Dust collector with work surface
US6090184A (en) 1998-02-27 2000-07-18 Hmi Industries, Inc. Filter system
US6171375B1 (en) * 1998-12-16 2001-01-09 Electrolux Llc Vacuum cleaner exhaust filter with ion generation stage
US6782585B1 (en) 1999-01-08 2004-08-31 Fantom Technologies Inc. Upright vacuum cleaner with cyclonic air flow
US6238451B1 (en) 1999-01-08 2001-05-29 Fantom Technologies Inc. Vacuum cleaner
US6344064B1 (en) 1999-01-29 2002-02-05 Fantom Technologies Inc. Method and apparatus of particle transfer in multi-stage particle separators
US6484350B2 (en) 1999-12-08 2002-11-26 Shell Electric Mfg. (Holdings) Co. Ltd. Bagless canister vacuum cleaner
US6269518B1 (en) 1999-12-08 2001-08-07 Shell Electric Mfg. (Holdings) Co. Ltd. Bagless vacuum cleaner
DE60006155T2 (en) * 1999-12-22 2004-08-12 Dyson Ltd., Malmesbury FILTER ARRANGEMENT
US6428590B1 (en) 2000-01-03 2002-08-06 Tennant Company Filter system for mobile debris collection machine
US6558453B2 (en) 2000-01-14 2003-05-06 White Consolidated Industries, Inc. Bagless dustcup
US6910245B2 (en) 2000-01-14 2005-06-28 White Consolidated Industries, Inc. Upright vacuum cleaner with cyclonic air path
US6398829B1 (en) 2000-02-01 2002-06-04 Tennant Company Filter system for mobile debris collection machine
US6616722B1 (en) 2000-05-09 2003-09-09 Hmi Industries, Inc. Room air cleaner
US6511531B1 (en) 2001-01-26 2003-01-28 Hmi Industries, Inc. Room air filtering and freshening device
US6488744B2 (en) 2001-03-19 2002-12-03 Hmi Industries, Inc. Filter system
CA2563510A1 (en) * 2001-07-13 2005-11-17 Nanosphere, Inc. Method for preparing substrates having immobilized molecules and substrates
US6829804B2 (en) * 2002-03-26 2004-12-14 White Consolidated, Ltd. Filtration arrangement of a vacuum cleaner
US6799351B2 (en) * 2002-03-29 2004-10-05 Hmi Industries, Inc. Floating nozzle
US7018438B2 (en) * 2002-03-29 2006-03-28 Hmi Industries, Inc. Filtering system
US7181804B2 (en) * 2002-11-07 2007-02-27 Panasonic Corporation Of North America Removable dirt cup assembly with external filter
US7185394B2 (en) * 2002-11-07 2007-03-06 Panasonic Corporation Of North America Dirt cup assembly with attachable and detachable external filter holder
US7544224B2 (en) * 2003-08-05 2009-06-09 Electrolux Home Care Products, Inc. Cyclonic vacuum cleaner
SE531908C2 (en) * 2008-01-16 2009-09-08 Electrolux Ab Vacuum cleaner
AU2009202183B2 (en) * 2008-06-05 2013-11-14 Bissell Inc. Cyclonic vacuum cleaner with improved filter cartridge
US9675225B2 (en) 2008-07-04 2017-06-13 Emerson Electric Co. Filter cage for wet/dry vacuums
US8206482B2 (en) * 2008-07-04 2012-06-26 Emerson Electric Co. Vacuum appliance filter assemblies and associated vacuum systems
US9510718B2 (en) 2008-07-04 2016-12-06 Emerson Electric Co. Wet/dry vacuum cleaner filter for wet material collection
GB2465780B (en) * 2008-11-28 2012-05-16 Dyson Technology Ltd Cleaning appliance with pre- and post filter arrangement
CN101870197B (en) * 2009-04-23 2014-06-04 海德堡印刷机械股份公司 Washing device
KR101566426B1 (en) * 2009-05-07 2015-11-06 삼성전자주식회사 Vacuum cleaner
CN104812282B (en) 2012-11-09 2017-07-04 伊莱克斯公司 Cyclone dust separator device, cyclone dust separator and cyclone vacuum cleaner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8420758U1 (en) * 1984-07-11 1985-11-07 Siemens AG, 1000 Berlin und 8000 München Filter for a vacuum cleaner
DE8500638U1 (en) * 1985-01-11 1986-05-07 Siemens AG, 1000 Berlin und 8000 München Filter for a vacuum cleaner
GB2167680A (en) * 1984-11-30 1986-06-04 Enviro Vac Limited Environmental cleaning machine
DE3526793A1 (en) * 1985-07-26 1987-01-29 Rebelo De Andrade Samuel Air purification apparatus
GB2246717A (en) * 1990-07-27 1992-02-12 Goblin Ltd Filter assembly for vacuum cleaners

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871847A (en) * 1974-01-16 1975-03-18 Whirlpool Co Vacuum cleaner filter
DE3341458C2 (en) * 1983-11-17 1986-11-13 Progress-Elektrogeraete Mauz & Pfeiffer Gmbh & Co, 7000 Stuttgart Vacuum cleaner with an exhaust filter
US5248323A (en) * 1992-11-09 1993-09-28 Health-Mor, Inc. Vacuum cleaner and filter thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8420758U1 (en) * 1984-07-11 1985-11-07 Siemens AG, 1000 Berlin und 8000 München Filter for a vacuum cleaner
GB2167680A (en) * 1984-11-30 1986-06-04 Enviro Vac Limited Environmental cleaning machine
DE8500638U1 (en) * 1985-01-11 1986-05-07 Siemens AG, 1000 Berlin und 8000 München Filter for a vacuum cleaner
DE3526793A1 (en) * 1985-07-26 1987-01-29 Rebelo De Andrade Samuel Air purification apparatus
GB2246717A (en) * 1990-07-27 1992-02-12 Goblin Ltd Filter assembly for vacuum cleaners

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005051155A1 (en) 2003-11-28 2005-06-09 Aktiebolaget Electrolux Vacuum cleaner filtration system
EP1689276B1 (en) 2003-11-28 2016-10-05 Aktiebolaget Electrolux Vacuum cleaner filtration system

Also Published As

Publication number Publication date
EP0793438B1 (en) 1999-01-27
DE69507631T2 (en) 1999-09-02
JPH10509068A (en) 1998-09-08
WO1996015709A1 (en) 1996-05-30
AU690369B2 (en) 1998-04-23
HK1002747A1 (en) 1998-09-18
EP0793437A1 (en) 1997-09-10
AU3878095A (en) 1996-06-17
AR000491A1 (en) 1997-07-10
EP0793437B1 (en) 1999-02-10
JPH10509067A (en) 1998-09-08
MY113412A (en) 2002-02-28
EP0793438A1 (en) 1997-09-10
AU3877995A (en) 1996-06-17
CA2221499A1 (en) 1996-05-30
DE69507836D1 (en) 1999-03-25
GB9423756D0 (en) 1995-01-11
CA2221500A1 (en) 1996-05-30
DE69507631D1 (en) 1999-03-11
DE69507836T2 (en) 1999-09-16
AU690370B2 (en) 1998-04-23
JP3547447B2 (en) 2004-07-28
GB2295311A (en) 1996-05-29
US5840103A (en) 1998-11-24

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