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:
Sep. 28, 2004
Filed:
Oct. 17, 2002
Applicant:
Inventors:
Jiro Sadanobu, Iwakuni, JP;
Rei Nishio, Iwakuni, JP;
Susumu Honda, Iwakuni, JP;
Tsutomu Nakamura, Iwakuni, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 7/310 ; B32B 2/700 ; B29C 5/500 ; B29C 5/512 ;
U.S. Cl.
CPC ...
C08G 7/310 ; B32B 2/700 ; B29C 5/500 ; B29C 5/512 ;
Abstract
An oriented polyimide film of high strength and a production process therefor. The process basically comprises stretching a gelled film and then imidating the film. The gelled film is formed by introducing a polyamic acid solution into a condensation agent solution. The gelled film is swollen with a solvent at the time of stretching.