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:
Jul. 31, 1990
Filed:
Nov. 16, 1988
Applicant:
Inventors:
Andreas Lindert, Troy, MI (US);
Stephen M Wolpert, Detroit, MI (US);
Assignee:
Henkel Corporation, Ambler, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
148251 ; 148274 ; 148257 ; 148247 ; 528148 ; 528162 ; 106 1415 ;
Abstract
A vegetable tannin is condensed with formaldehyde and an amine to provide an acid soluble product which is useful in a metal treatment solution to enhance corrosion resistance and paint adhesion characteristics of a metal surface.
Lindert, Andreas. (1990). Tannin mannich adducts for improving corrosion resistance of metals (U.S. Patent No. 4944812). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4944812
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile