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:
Feb. 19, 1980
Filed:
May. 08, 1978
Applicant:
Inventors:
Shoji Kimura, Chigasaki, JP;
Noboru Ishida, Sagamihara, JP;
Midori Masunaga, Tokyo, JP;
Yoshiki Kohno, Kawasaki, JP;
Assignee:
Nippon Oil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252 63 ; 208 14 ;
Abstract
An electrical insulating oil composition consisting essentially of (I) 50-95 parts by weight of a mineral oil-derived electrical insulating oil, (II) 5-50 parts by weight of at least one oil selected from diarylalkanes, polybutene, an oil having a specified refractive index and a hydrocarbon oil-derived hydrofined oil, and (III) 0.001-1.0% by weight of a hydrocarbon-derived pour point depressant, based on the total weight of the oils (I) and (II).