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. 16, 1990
Filed:
Feb. 13, 1989
Applicant:
Inventors:
Joelle Bressan, Rosny Sous Bois, FR;
Jacques Mezon, Saint Gratien, FR;
Assignee:
Gaz de France (Service National), Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
252387 ; 252 71 ; 252 74 ; 25238962 ; 25238954 ;
Abstract
This invention relates to corrosion inhibitors of steels, particularly carbon steels or low-alloy steels. They are ternary mixtures with synergetic action containing at least one strong base, at least one molybdate and at least one phosphate. This invention also relates to aqueous compositions of alkali metal halide containing said inhibitors. Such compositions are advantageously used as working fluid in high temperature absorption heat pump systems.