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:
Aug. 15, 2017
Filed:
Oct. 15, 2014
Baker Hughes Incorporated, Houston, TX (US);
Zhengwei Liu, Sugar Land, TX (US);
Sunder Ramachandran, Sugar Land, TX (US);
Vaithilingam Panchalingam, Friendswood, TX (US);
Timothy Z. Garza, Dickinson, TX (US);
Paul Robert Stead, Sugar Land, TX (US);
Stuart Edward Cook, Houston, TX (US);
Gordon T. Rivers, Houston, TX (US);
Vu Thieu, Richmond, TX (US);
Heather McEachern, Webster, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyacid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.