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:
Jun. 16, 2020
Filed:
Mar. 23, 2018
Baker Hughes, a GE Company, Llc, Houston, TX (US);
Mary Jane Legaspi Felipe, Sugar Land, TX (US);
Timothy Ray Underwood, Cypress, TX (US);
Albert Sidney Dunn, Lake Charles, LA (US);
David N. Fulmer, Missouri City, TX (US);
Montgomery A. Pifer, Kingwood, TX (US);
Stephen J. Wiacek, Wallingford, PA (US);
Khac Truc Nguyen, Houston, TX (US);
William Mansfield, Houston, TX (US);
William Watson, Houston, TX (US);
Chelsea Eaton, Katy, TX (US);
Baker Hughes, a GE company, LLC, Houston, TX (US);
Abstract
An additive comprising one or more C-Chydroxycarboxylic acids and/or one or more C-Chydroxycarboxylic acid salts may be added to an aqueous system having galvanized metallurgy or a carbon steel surface in an effective amount to passivate a galvanized coating on the metallurgy or to decrease white rust formation or other types of corrosion upon the galvanized metallurgy or carbon steel surface in an aqueous system. In a non-limiting embodiment, the C-Chydroxycarboxylic acid or the C-Chydroxycarboxylic acid salt additive may utilize the zinc in the galvanized coating to achieve passivation. The passivation may occur while the system is shut down or in service. The aqueous system may be or include a cooling tower, a cooling water system, and combinations thereof. The additive may be used with or in the absence of a phosphorous-containing compound.