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. 28, 1976
Filed:
Dec. 22, 1971
Applicant:
Inventors:
Robert R Annand, St. Louis, MO (US);
Aldred E Woodson, Festus, MO (US);
Assignee:
Petrolite Corporation, St. Louis, MO (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; C23F / ; C23F / ;
U.S. Cl.
CPC ...
21 / ; 21 / ; 252148 ; 252390 ;
Abstract
Polyquaternary amines, for example those formed by reacting mono- or polyamines with a polyfunctional compound, for example difunctional compounds such as organohalides, epihalohydrins, etc., which are capable of both quaternizing and extending the molecular weight of the amine; and to uses for these polyquaternaries, particularly as corrosion inhibitors for highly acid systems.
Annand, Robert. (1976). Method of inhibiting acidic corrosion of ferrous metals with (U.S. Patent No. 3982894). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3982894
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile