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, 2000
Filed:
Jun. 04, 1997
Applicant:
Inventors:
Raymond Frederick Watts, Long Valley, NJ (US);
Ricardo Alfredo Bloch, Scotch Plains, NJ (US);
Assignee:
Exxon Chemical Patents INC, Linden, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
508162 ; 508192 ; 508280 ; 508563 ; 252 75 ;
Abstract
The invention provides synergistic combinations of phosphorus acid-containing compounds with ashless antioxidants. These combinations dramatically improve the oxidation stability of lubricating compositions, particularly power transmission fluids such as automatic transmission fluids.