Foamed gypsum filter containing carbonaceous material

Details Foamed gypsum filter containing carbonaceous material Foamed gypsum filter containing carbonaceous material

1985-03-22

1986-09-16

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

106 86, 106 87, 106 88, 106109, 106111, 131331, 131332, 131334, 131335, 131340, 521100, C08G 1814

Patent

active

046123334

ABSTRACT:
A filter composition is formed from a foamed gypsum combined with fine particulate carbonaceous material such as activated carbon, dried blood and comminuted vegetable matter. The combination of activated carbon with dried blood provides a particularly effective human user filter system. A broad range of filter uses are contemplated such as face masks and cigarette filters.

REFERENCES:
patent: 2902998 (1959-09-01), Durandeaux
patent: 3526685 (1970-09-01), Foster et al.
patent: 3563777 (1971-02-01), Pratt et al.
patent: 3719513 (1973-03-01), Bragg et al.
patent: 3758319 (1973-09-01), Ergene
patent: 3839059 (1974-10-01), Rothfelder et al.
patent: 3926650 (1975-12-01), Lange et al.
patent: 3974024 (1976-08-01), Yano et al.
patent: 4084980 (1978-04-01), Motoki
patent: 4133638 (1979-01-01), Healey
patent: 4229223 (1980-10-01), Flake
patent: 4240839 (1980-12-01), Crepeau et al.
patent: 4265964 (1981-05-01), Burkhart

Affiliated with

Also associated with

Rating

Foamed gypsum filter containing carbonaceous material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foamed gypsum filter containing carbonaceous material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foamed gypsum filter containing carbonaceous material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1995955