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:
Nov. 10, 2020
Filed:
Oct. 25, 2016
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Wintec, Inc., Koka, JP;
Shinya Ota, Osaka, JP;
Shuhei Maeda, Osaka, JP;
Hideaki Saito, Osaka, JP;
Jun Sugawara, Osaka, JP;
Masaaki Yamauchi, Koka, JP;
Yasushi Tamura, Koka, JP;
Kengo Yoshida, Koka, JP;
Yudai Furuya, Koka, JP;
Yuji Hatanaka, Koka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
SUMITOMO ELECTRIC WINTEC, INC., Shiga, JP;
Abstract
An insulated electric wire includes a linear conductor and one or a plurality of insulating layers formed on an outer peripheral surface of the conductor. At least one of the one or plurality of insulating layers contains a plurality of pores, outer shells are disposed on peripheries of the pores, and the outer shells are derived from shells of hollow-forming particles having a core-shell structure. A varnish for forming an insulating layer contains a resin composition forming a matrix and hollow-forming particles having a core-shell structure and dispersed in the resin composition. In the varnish, cores of the hollow-forming particles contain a thermally decomposable resin as a main component, and shells of the hollow-forming particles contain a main component having a higher thermal decomposition temperature than the thermally decomposable resin.