The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 1980
Filed:
Apr. 26, 1977
Applicant:
Inventors:
Takashi Fukuda, Otsu, JP;
Masayoshi Shimada, Otsu, JP;
Nobuo Ishizaki, Otsu, JP;
Shoichi Iwahori, Otsu, JP;
Assignee:
Toyobo Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55316 ; 55382 ; 55486 ; 55497 ; 55521 ; 55524 ; 55527 ; 55528 ; 252421 ; 4234471 ;
Abstract
An adsorptive filter material having deodorizing, degassing and decolorizing properties which comprises an adsorptive sheet layer of active carbon fibers of which the active carbon fiber content is not less than about 20% by weight and reinforcing sheet layers of fibers having a single yarn strength of not less than about 2 g/denier and an elongation of not less than about 2% provided on the surfaces of the adsorptive sheet layer, the adsorptive sheet layer and the reinforcing sheet layers each weighing from about 20 to 2,000 g/m.sup.2.