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. 28, 2016
Filed:
Nov. 05, 2012
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Sumitomo Electric Wintec, Inc., Koka-shi, Shiga, JP;
Kengo Yoshida, Koka, JP;
Masaaki Yamauchi, Koka, JP;
Masataka Shiwa, Koka, JP;
Yuji Hatanaka, Koka, JP;
Junichi Imai, Koka, JP;
Jun Sugawara, Osaka, JP;
Toru Shimizu, Osaka, JP;
Hideaki Saito, Osaka, JP;
Yuudai Furuya, Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
SUMITOMO ELECTRIC WINTEC, INC., Shiga, JP;
Abstract
An insulating varnish forms an insulating coating film having a shape that corresponds to the shape of an opening of a die, having a uniform thickness. The insulating varnish is applied onto a surface of a conductor, subsequently passes through a die to remove the excess applied insulating varnish, and is then dried or baked to form an insulating coating film on the surface of the conductor. The insulating varnish has a viscosity of 10 Pa·s or more measured by a B-type viscometer at 30° C. The insulating varnish preferably contains no filler, and is preferably a polyimide precursor solution. Since the insulating varnish has a high viscosity, baking and solidification can be performed while maintaining a shape formed when the insulating varnish passes through a die.