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. 23, 1991
Filed:
Oct. 12, 1989
Applicant:
Inventors:
Yoshiharu Nakamura, Fukui, JP;
Teruo Hori, Fukui, JP;
Hideki Nawa, Koriyama, JP;
Taizo Igarashi, Nishinomiya, JP;
Assignee:
Nippon Oil and Fats Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21050038 ; 2105004 ;
Abstract
The invention is a method for producing a composite membrane useful as a functional membrane which comprises mixing polyamide and polyester in a solvent to obtain a mixed solution and preparing the membrane while removing the solvent from the mixed solution under an electric field and the composite membrane obtained by the above method.