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:
Feb. 11, 1986
Filed:
Nov. 19, 1984
Applicant:
Inventors:
Katsuhiko Yamaguchi, Osaka, JP;
Seiki Kobayashi, Osaka, JP;
Yasufumi Miyake, Osaka, JP;
Akio Tsumura, Osaka, JP;
Assignee:
Nitto Electric Industrial Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B29C / ;
U.S. Cl.
CPC ...
428339 ; 428480 ; 428483 ; 428910 ; 2641 / ; 264346 ;
Abstract
A polyester film for printed circuits to be used as a base in a printed circuit base plate or as a base and/or cover layer in a printed circuit board, which undergoes a degree of dimensional stability of not more than 1% in both the longitudinal and transverse directions when kept at 150.degree. C. for 30 minutes, and which is obtained by heat treating an extrusion molded and stretched polyester film at 150.degree. C. to 240.degree. C. without applying tension.