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. 04, 2014
Filed:
Feb. 15, 2011
Shuta Nabeshima, Hitachi, JP;
Yuki Honda, Hitachi, JP;
Tomiya Abe, Hitachi, JP;
Hideyuki Kikuchi, Hitachi, JP;
Yasuhiro Funayama, Hitachi, JP;
Shuta Nabeshima, Hitachi, JP;
Yuki Honda, Hitachi, JP;
Tomiya Abe, Hitachi, JP;
Hideyuki Kikuchi, Hitachi, JP;
Yasuhiro Funayama, Hitachi, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
An insulating varnish includes a polyamide-imide resin including a repeat unit represented by Formula (1) below derived from a synthesis reaction between a resin component (X) and a diisocyanate component (Y). The resin component (X) is derived from a synthesis reaction between a diamine component including aromatic diamines including g a divalent aromatic group (R) including three or more aromatic rings, and an acid component in the presence of an azeotrope solvent. The diisocyanate component (Y) includes a 2,4'-diphenylmethane diisocyanate (Y) and a 4,4′-diphenylmethane diisocyanate (Y). In Formula (1), R denotes the divalent aromatic group including three or more aromatic rings, and m and n denote an integer of from 1 to 99.