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:
Jul. 19, 1988
Filed:
Jun. 14, 1985
Applicant:
Inventors:
Haruo Seki, Yokohama, JP;
Kensuke Sugiura, Tokyo, JP;
Assignee:
Nippon Oil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 / ;
Abstract
A lubricating oil composition suitable for use in automative transmissions of an automatic type is disclosed. The oil, mineral or synthetic, is combined with specified amounts of C.sub.2 -C.sub.10 monoolefin polymers and methacrylic acid ester copolymers of C.sub.1 -C.sub.18 saturated aliphatic monovalent alcohols, whereby viscosity/temperature characteristics and shear stability in particular are greatly improved.