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:
May. 13, 1997
Filed:
Sep. 27, 1996
Applicant:
Inventors:
Richard M Lange, Euclid, OH (US);
Mark R Baker, Lyndhurst, OH (US);
Stephen H Stoldt, Concord Township, OH (US);
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564134 ;
Abstract
A process for preparing an amide of a bis (hydrocarbyl substituted hydroxyaryl) acetic acid by reacting a lactone produced in the reaction between the glyoxylic acid and phenol with a polyamine in the presence of an alcohol solvent is disclosed.