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:
Mar. 03, 1992
Filed:
Sep. 28, 1990
Applicant:
Inventors:
Keisuke Funaki, Ichihara, JP;
Yuichi Ohki, Himeji, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01G / ; B32B / ;
U.S. Cl.
CPC ...
361323 ; 428220 ;
Abstract
An electrical insulating film which comprises a styrene polymer having a syndiotactic configuration and containing not more than 1,000 ppm of residual aluminum derived from the catalyst used in the production of the styrene polymer, and not more than 3,000 ppm of residual styrene monomer, and a condenser comprising metal electrodes and the above film which is 0.5 to 30 .mu.m thick and has crystallinity of not less than 25%, are disclosed.