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:
Feb. 10, 1981
Filed:
Apr. 16, 1979
Applicant:
Inventor:
William A Higgins, Gates Mills, OH (US);
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252 / ; 252 / ; 252392 ; 422 16 ; 422 17 ;
Abstract
Certain salts of polycarboxylic acids and amino compounds are useful as corrosion inhibitors in aqueous systems used in well-drilling operations. Typical such corrosion inhibitors are made from acids such as sebacic and azelaic acid and amino compounds such as ammonia, ethanol amine, di- and tri-ethanol amines and N,N-diethyl-ethanol amine.