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. 23, 1985
Filed:
Apr. 13, 1982
Applicant:
Inventors:
Hiroshi Makino, Ichihara, JP;
Yoshihiro Kusuki, Ichihara, JP;
Takashi Harada, Ichihara, JP;
Hiroshi Shimazaki, Ichihara, JP;
Tosio Isida, Ichihara, JP;
Assignee:
UBE Industries, Ltd., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B32B / ;
U.S. Cl.
CPC ...
2105002 ; 55158 ; 264 41 ; 2641 / ; 2642096 ; 264216 ; 521 61 ; 521 63 ; 521 64 ; 528229 ; 528353 ;
Abstract
A porous aromatic imide polymer membrane usable as a gas or liquid separator or concentrator is prepared by a process comprising the steps of: