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:
Nov. 29, 1994
Filed:
Oct. 20, 1993
Applicant:
Inventors:
Volker Schafer, Altrip, DE;
Robert Kohler, Oberhausen, DE;
Alfred Pauli, Sandhausen, DE;
Achim Fessenbecker, Heidelberg, DE;
Assignee:
Rhein Chemie Rheinau GmbH, Mannheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
252395 ; 252 45 ; 252406 ; 422-7 ; 554 92 ; 554142 ; 562 91 ; 562101 ;
Abstract
A method for improving the corrosion inhibition of lubricating oils especially those of vegetable origin which comprises adding an efficient amount of the reaction product of an epoxidized fatty acid ester, especially an epoxidized methyl ester of an unsaturated fatty acid and a sulphonic acid and a process for producing these reaction products.