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:
Apr. 24, 1990
Filed:
May. 28, 1987
Applicant:
Inventors:
Hajime Itoh, Hiroshima, JP;
Hiroshi Takahashi, Otake, JP;
Kouji Ohbori, Otake, JP;
Hideaki Habara, Otaka, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21050034 ; 21050035 ; 428339 ; 428520 ; 428521 ; 428522 ; 428398 ; 428376 ; 264 41 ;
Abstract
Disclosed is a porous membrane consisting of a film-forming polymer characterized in that: