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:
Mar. 19, 1985
Filed:
Mar. 13, 1984
Applicant:
Inventors:
Atsushi Sato, Tokyo, JP;
Keiji Endo, Yokosuka, JP;
Shigenobu Kawakami, Ichikawa, JP;
Hitoshi Yanagishita, Yokohama, JP;
Shozo Hayashi, Yokohama, JP;
Assignee:
Nippon Petrochemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ; H01B / ; H01F / ; H01G / ;
U.S. Cl.
CPC ...
174 / ; 174 / ; 174 / ; 252570 ; 336 94 ; 361317 ; 361327 ; 585-63 ; 585-66 ; 585-1 ; 585 11 ; 585 25 ;
Abstract
A novel electrical insulating oil and oil-filled electrical appliances that are impregnated with the novel insulating oil. The electrical insulating oil is quite suitable for use in oil-filled electrical appliances in which insulating materials or dielectric materials made of plastics are employed. The electrical insulating oil comprises (a) at least one member of alkylbiphenyls and alkylnaphthalenes and (b) at least one member of monoolefins and diolefins each having two condensed or noncondensed aromatic nuclei.