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:
Jan. 22, 2002
Filed:
Dec. 13, 1995
Applicant:
Inventors:
Jody A. Kocsis, Chagrin Falls, OH (US);
Sheri L. Blystone, Mentor, OH (US);
Ewa A. Bardasz, Mentor, OH (US);
Marvin B. DeTar, Wickliffe, OH (US);
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
C10M / ;
Abstract
Lubricants which comprise, as an additive a salt of the reaction product of (i) glyoxylic acid or a hydrocarbyl substituted glyoxylic acid and (ii) a hydroxyaromatic compound, at least a portion of the molecules of which are alkyl-substituted, are useful for lubricating ceramic-containing engines, high temperature engines, and natural gas-fueled engines. Particularly useful additives are those in which the hydroxyaromatic compound is a dialkyl phenol containing a t-butyl group in an ortho position.