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. 05, 2012
Filed:
Jun. 04, 2009
Applicants:
Hideyuki Kikuchi, Hitachi, JP;
Yuzo Yukimori, Hitachi, JP;
Yuki Honda, Hitachi, JP;
Inventors:
Assignees:
Hitachi Magnet Wire Corp., Ibaraki, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polyamide-imide resin insulating varnish includes an aromatic diamine component, an aromatic diisocyanate component, an acid component including an aromatic tricarboxylic acid anhydride, and a solvent. The aromatic diamine component includes an aromatic diamine with three or more benzene rings and an aromatic diamine with two or less benzene rings. The aromatic diamine with three or more benzene rings and the aromatic diamine with two or less benzene rings are added 99/1 to 30/70 in mole ratio.