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Publication numberUSD325070 S
Publication typeGrant
Application numberUS 07/365,022
Publication dateMar 31, 1992
Filing dateJun 9, 1989
Publication number07365022, 365022, US D325070 S, US D325070S, US-S-D325070, USD325070 S, USD325070S
InventorsHenry B. Kopf
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Filter sheet
US D325070 S
Abstract  available in
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  1. The ornamental design for a filter sheet, as shown and described.

FIG. 1 is a top plan view of a filter sheet showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being identical;

FIG. 4 is a front elevational view thereof, the rear being identical; and,

FIG. 5 is a front elevational view thereof, on an enlarged scale, partially shown for clarity and ease of illustration.

Non-Patent Citations
1"Laboratory Ultrafiltration Products for Improved Biological Recovery", Lit. No. AB841, 10/88.
2"Shorten the Race to the Market with Millipore Pilot and Process Systems", Lit. No. SD100, 1/88.
3"Toyo Soda Ultrafiltration Cassette UF-LABO", undated.
4Prostak™ Bench Top Development System Lit No. SD200, 8/88.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8795530Jan 21, 2010Aug 5, 2014Smartflow Technologies, Inc.Optimization of separation for viscous suspensions
US9101883Nov 29, 2010Aug 11, 2015Smartflow Technologies, Inc.Portable filtration unit
US9163265Feb 21, 2012Oct 20, 2015Smartflow Technologies, Inc.Method and systems for isolation and/or separation of products from production processes
U.S. ClassificationD23/209