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:
Sep. 19, 1989
Filed:
May. 12, 1987
Applicant:
Inventors:
Terence Colclough, Abingdon, Oxfordshire, GB;
Frederick A Gibson, Penwood, Newbury, Burgh Close, GB;
John F Marsh, Goring, Reading, Berkshire, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
2523 / ; 252 334 ; 252 427 ; 252 47 ; 252 482 ; 252 497 ; 252 50 ; 252 / ; 252 / ;
Abstract
A lubricating oil composition having improved properties comprises a major proportion by weight of a lubricating oil, a dispersant compound, from 0.01 to 0.5 wt % phosphorus and zinc and 5 to 500 parts per million of copper, and additive concentrates for blending with oil to produce such lubricating oil compositions.