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:
Jun. 22, 1999
Filed:
Jan. 29, 1997
Applicant:
Inventors:
Toshiaki Yamada, Tokyo, JP;
Takeshi Takahashi, Tokyo, JP;
Atsushi Yakuwa, Tokyo, JP;
Hideaki Ninomiya, Tokyo, JP;
Naoyuki Amaya, Tokyo, JP;
Naoki Saito, Tokyo, JP;
Yasuhiro Imamura, Tokyo, JP;
Norihiro Kaiya, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
442117 ; 442173 ; 442180 ; 428522 ; 428523 ; 428338 ; 428339 ; 526319 ; 526321 ; 5263231 ; 526324 ; 526325 ;
Abstract
A film comprises glass fiber impregnated with a low dielectric polymer obtained by polymerizing a monomeric composition comprising a fumaric acid diester monomer and optionally a vinyl monomer. The polymer having a low dielectric constant and reduced dielectric loss is used as an electrically insulating material in a high frequency band of at least 500 MHz.