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:
Dec. 13, 1977
Filed:
Jul. 23, 1976
Applicant:
Inventors:
Assignee:
Nippon Oil Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252 63 ; 208 14 ; 208 19 ;
Abstract
An electrical insulating oil having excellent oxidation stability, thermal stability, corona resistance, corrosion resistance and, if desired, a particularly low pour point, which consists essentially of a blend of a refined oil (I) derived from a paraffin or mixed base crude oil, a refined oil (II) prepared from a lubricating oil fraction of a mineral oil, at least one arylalkane (III) such as an alkylbenzene, and, if desired, an essentially amorphous ethylene-propylene copolymer (IV).