METHOD OF FILTERING TOBACCO SMOKE
United States Patent 3461882

Inventors:
Epstein, Martin E.
Jamison, Saunders E.
Publication Date:
08/19/1969
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Assignee:
CELANESE CORP
Primary Class:
131/332
Other Classes:
95/78, 131/342, 96/17, 55/522, 55/527
International Classes:
A24D3/08; A24D3/00; A24F25/00; A24F7/04; B01D35/06
US Patent References:
2933154Process for filtering with polytetrafluoroethylene fibers
2966157Polyolefin tobacco smoke filters
3028864Methods and devices for filtering tobacco smoke
3144025Tobacco smoke filters
3229008Process for producing a polypropylene fibrous product bonded with polyethylene




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