Patents by Inventor Stuart Edward Cook

Stuart Edward Cook has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Chemical inhibition of pitting corrosion in methanolic solutions containing an organic halide
    Patent number: 10392712
    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 hydroxyl-acid 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.
    Type: Grant
    Filed: July 8, 2017
    Date of Patent: August 27, 2019
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Zhengwei Liu, Sunder Ramachandran, Vaithilingam Panchalingam, Timothy Z. Garza, Paul Robert Stead, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Heather McEachern
  • CHEMICAL INHIBITION OF PITTING CORROSION IN METHANOLIC SOLUTIONS CONTAINING AN ORGANIC HALIDE
    Publication number: 20170306505
    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.
    Type: Application
    Filed: July 8, 2017
    Publication date: October 26, 2017
    Applicant: Baker Hughes, a GE company, LLC
    Inventors: Zhengwei Liu, Sunder Ramachandran, Vaithilingam Panchalingam, Timothy Z. Garza, Paul Robert Stead, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Heather McEachern
  • Chemical inhibition of pitting corrosion in methanolic solutions containing an organic halide
    Patent number: 9732430
    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.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: August 15, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Zhengwei Liu, Sunder Ramachandran, Vaithilingam Panchalingam, Timothy Z. Garza, Paul Robert Stead, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Heather McEachern
  • Use of hydroxyacid to reduce the localized corrosion potential of low dose hydrate inhibitors
    Patent number: 9663666
    Abstract: Corrosion of metal conduits by hydrate inhibitor formulations, particularly localized corrosion, is mitigated when the hydrate inhibitor formulation contains an effective amount of at least one hydroxyacid or equivalent selected from the group consisting of hydroxyacids having 2 to 20 carbon atoms and at least one hydroxyl group. The hydrate inhibitor formulation has an absence of methanol, but may include other alcohol solvents, diol or triol solvents, aromatic solvents and ketone solvents.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: May 30, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Timothy Z. Garza, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Paul Robert Stead
  • USE OF HYDROXYACID TO REDUCE THE LOCALIZED CORROSION POTENTIAL OF LOW DOSE HYDRATE INHIBITORS
    Publication number: 20160215149
    Abstract: Corrosion of metal conduits by hydrate inhibitor formulations, particularly localized corrosion, is mitigated when the hydrate inhibitor formulation contains an effective amount of at least one hydroxyacid or equivalent selected from the group consisting of hydroxyacids having 2 to 20 carbon atoms and at least one hydroxyl group. The hydrate inhibitor formulation has an absence of methanol, but may include other alcohol solvents, diol or triol solvents, aromatic solvents and ketone solvents.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 28, 2016
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: TIMOTHY Z. GARZA, STUART EDWARD COOK, GORDON T. RIVERS, VU THIEU, PAUL ROBERT STEAD
  • CHEMICAL INHIBITION OF PITTING CORROSION IN METHANOLIC SOLUTIONS CONTAINING AN ORGANIC HALIDE
    Publication number: 20150118105
    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.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 30, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Zhengwei Liu, Sunder Ramachandran, Vaithilingam Panchalingam, Timothy Z. Garza, Paul Robert Stead, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Heather Mceachern