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:
Aug. 06, 2019
Filed:
Sep. 05, 2014
Applicant:
Jxtg Nippon Oil & Energy Corporation, Tokyo, JP;
Inventors:
Takashi Morikita, Tokyo, JP;
Hiroyuki Hoshino, Tokyo, JP;
Assignee:
JXTG NIPPON OIL & ENERGY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 3/22 (2006.01); H01G 4/22 (2006.01); H01G 4/18 (2006.01); H01B 3/20 (2006.01);
U.S. Cl.
CPC ...
H01G 4/221 (2013.01); H01B 3/20 (2013.01); H01B 3/22 (2013.01); H01G 4/18 (2013.01);
Abstract
It is an object to provide an electrically insulating oil composition that can maintain dielectric breakdown voltage high in a wide temperature range of −50° C. to 65° C., and can suppress a decrease in dielectric breakdown voltage even in the case of use at high temperature for a long time, and there is provided an electrically insulating oil composition comprising 1,1-diphenylethane and benzyltoluene, wherein the proportion of a para isomer in the benzyltoluene is 45% by mass or more based on a total amount of the benzyltoluene.