Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Patent
1987-05-18
1989-03-21
Cohan, Alan
Surgery
Respiratory method or device
Means for removing substance from respiratory gas
55522, 4232451, A62B 1800
Patent
active
048134104
ABSTRACT:
A gas mask filter material is described comprising a dried acidic ion exchange resin which is effective in removing low levels of ethylene oxide from air contaminated therewith. Specifically described is a gas mask filter comprising a cross-linked polystyrene resin with sulfonic acid functionality that contains less than about 20 percent by weight water.
REFERENCES:
patent: 3851043 (1974-11-01), Gunther
patent: 4365071 (1982-12-01), Yamanes
patent: 4383956 (1983-05-01), Croft
patent: 4423005 (1983-12-01), Murtaugh
patent: 4572178 (1986-02-01), Takase
Hammer David E.
Kruse Richard J.
Advanced Air Technologies, Inc.
Cohan Alan
Georges Peter J.
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