Methods and systems for supplying supplemental oxygen to patients for use in sub-acute care which maintains healthy blood oxygen content in the patients by controlled dosing of oxygen with a measured response to the patient's actual blood oxygen content are disclosed. The dosing can be provided by simple...http://www.google.com/patents/US6532958?utm_source=gb-gplus-sharePatent US6532958 - Automated control and conservation of supplemental respiratory oxygen
