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:
Oct. 20, 1992
Filed:
Jun. 20, 1990
Applicant:
Inventors:
Charles Y Cha, McMurray, PA (US);
Daniel P Vanderpool, Coraopolis, PA (US);
Assignee:
Calgon Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ; C23F / ;
U.S. Cl.
CPC ...
252395 ; 252394 ; 422 14 ; 422 16 ;
Abstract
A composition which is useful for inhibiting the corrosion of copper and copper alloy metals in contact with an aqueous system is disclosed. The composition comprises phenyl mercaptotetrazole and tolytriazole and/or benzotriazole.