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:
Jan. 21, 2003
Filed:
Jul. 16, 2001
Applicant:
Inventor:
Gerald Wojcik, Thomaston, CT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 1/506 ; C09K 1/516 ; C09K 1/532 ; C23F 1/100 ; C08B 3/708 ;
U.S. Cl.
CPC ...
C09K 1/506 ; C09K 1/516 ; C09K 1/532 ; C23F 1/100 ; C08B 3/708 ;
Abstract
A composition and process for inhibiting the corrosion of metallic substrates is revealed. The process utilizes an aqueous treatment solution comprising chitosan which has been reacted with an acid selected from the group consisting of phosphonic acids, carboxylic acids and mixtures thereof. The composition and process are particularly useful in providing corrosion protection for aluminum and aluminum alloys.