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:
Jul. 03, 1990
Filed:
Sep. 10, 1986
Applicant:
Inventors:
Shuzo Ohyabu, Kurashiki, JP;
Syuji Kawai, Kurashiki, JP;
Takehiko Okamoto, Kurashiki, JP;
Takao Migaki, Okayama, JP;
Assignee:
Kuraray Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ; A61F / ;
U.S. Cl.
CPC ...
623 66 ; 623 12 ; 21050023 ; 21050024 ; 21050028 ; 21050041 ; 427245 ;
Abstract
A composite hollow fiber type separation membrane which has three layers comprising a selective separation layer, an ultra-microporous layer and a porous layer, said selective separation layer, said ultra-microporous layer, said porous layer being arranged in said order commencing from the inner surface of said hollow fiber membrane;