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. 24, 2015
Filed:
Aug. 05, 2011
Hideyuki Kikuchi, Hitachi, JP;
Yasuhiro Funayama, Hitachi, JP;
Hidehito Hanawa, Hitachi, JP;
Yuki Honda, Hitachi, JP;
Takami Ushiwata, Hitachi, JP;
Shuta Nabeshima, Hitachi, JP;
Hideyuki Kikuchi, Hitachi, JP;
Yasuhiro Funayama, Hitachi, JP;
Hidehito Hanawa, Hitachi, JP;
Yuki Honda, Hitachi, JP;
Takami Ushiwata, Hitachi, JP;
Shuta Nabeshima, Hitachi, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A insulated wire includes a conductor, and an insulating coating on a periphery of the conductor. The insulating coating includes an insulating film formed by applying and baking a polyester imide resin insulating coating material, and the insulating film has a relative permittivity of less than 3.5 both in a dried state and in a moisture-absorbed state. The insulating film is formed by applying and baking a polyester imide resin insulating coating material including an imide dicarboxylic acid and an alcohol component, the imide dicarboxylic acid being obtained by synthesizing a diamine component including aromatic diamine having not less than three aromatic rings and an acid component including aromatic tricarboxylic acid anhydride.