Patents by Inventor Christine Walston

Christine Walston 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).

  • Environmental barrier coating for silicon-containing substrates and process therefor
    Patent number: 7919187
    Abstract: A protective coating for use on a silicon-containing substrate, and deposition methods therefor. The coating has a strontium-aluminosilicate (SAS) composition that is less susceptible to degradation by volatilization and in corrosive environments as a result of having at least an outer surface region that consists essentially of one or more stoichiometric crystalline phases of SAS and is substantially free of a nonstoichiometric second crystalline phase of SAS that contains a substoichiometric amount of silica. The coating can be produced by carrying out deposition and heat treatment steps that result in the entire coating or just the outer surface region of the coating consisting essentially of the stoichiometric celsian phase.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: April 5, 2011
    Assignee: General Electric Company
    Inventors: Brian Thomas Hazel, Christine Walston, Irene Spitsberg
  • ENVIRONMENTAL BARRIER COATING FOR SILICON-CONTAINING SUBSTRATES AND PROCESS THEREFOR
    Publication number: 20070184287
    Abstract: A protective coating for use on a silicon-containing substrate, and deposition methods therefor. The coating has a strontium-aluminosilicate (SAS) composition that is less susceptible to degradation by volatilization and in corrosive environments as a result of having at least an outer surface region that consists essentially of one or more stoichiometric crystalline phases of SAS and is substantially free of a nonstoichiometric second crystalline phase of SAS that contains a substoichiometric amount of silica. The coating can be produced by carrying out deposition and heat treatment steps that result in the entire coating or just the outer surface region of the coating consisting essentially of the stoichiometric celsian phase.
    Type: Application
    Filed: December 27, 2006
    Publication date: August 9, 2007
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Brian Hazel, Christine Walston, Irene Spitsberg