Pollen filter

Details Pollen filter Pollen filter

1997-11-07

1999-09-14

Woo, Jay H.

Gas separation

Combined or convertible

55DIG35, 96223, 96226, B01D 4618

Patent

active

059517271

ABSTRACT:
An air-permeable filter material for use on doors, door frames, windows or window frames and a method of using the filter material to protect against the ingress of pollen and dirt particles in the environment. The filter material may be composed of fabric or film or a combination of film and fabric, the material having perforations of a diameter of 2-250 .mu.m, and a fixing material for applying the filter material.

REFERENCES:
patent: 3757495 (1973-09-01), Sievers
patent: 3918448 (1975-11-01), McCosker
patent: 4038979 (1977-08-01), McCosker
patent: 4784131 (1988-11-01), Schroeder
patent: 4889542 (1989-12-01), Hayes
patent: 5727544 (1998-03-01), Miura

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