Patents by Inventor Howard John Farr

Howard John Farr 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).

  • Metal slurry coatings on substrates, and related articles
    Patent number: 6613445
    Abstract: A method for forming a metal-containing layer on a substrate is disclosed. A slurry of the metal is first deposited on the substrate; followed by heating to remove volatile material from the slurry, and to form a layer of the metal. In another embodiment, a slurry of aluminum is deposited over the slurry of the metal, before or after the metal has been heat-treated to some degree. A diffusion heat treatment results in a coating which includes the noble-metal aluminide compound. Related articles are also disclosed.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: September 2, 2003
    Assignee: General Electric Company
    Inventors: D. Sangeeta, Howard John Farr
  • Method for determining the quantities of acids or bases in complex compositions
    Patent number: 6542828
    Abstract: A method for determining the concentration of at least one acid or base in a complex solution is described. Multiple physical property values are first measured for the solution. The physical properties can be defined in the form of a set of solution property equations. The measured physical property values are then inserted into the solution property equations. When the equations are simultaneously solved, the desired concentration of the acid or basic component can be determined.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: April 1, 2003
    Assignee: General Electric Company
    Inventors: Leo Spitz MacDonald, Himanshu Bachubhai Vakil, Edward Brittain Stokes, D Sangeeta, Howard John Farr
  • Method for applying coatings on substrates
    Patent number: 6485780
    Abstract: A method for forming a metal-containing layer on a substrate is disclosed. A slurry of the metal is first deposited on the substrate; followed by heating to remove volatile material from the slurry, and to form a layer of the metal. In another embodiment, a slurry of aluminum is deposited over the slurry of the metal, before or after the metal has been heat-treated to some degree. A diffusion heat treatment results in a coating which includes the noble-metal aluminide compound. Related articles are also disclosed.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: November 26, 2002
    Assignee: General Electric Company
    Inventors: D. Sangeeta, Howard John Farr
  • Method for determining the quantites of acids or bases in complex compositions
    Publication number: 20020143474
    Abstract: A method for determining the concentration of at least one acid or base in a complex solution is described. Multiple physical property values are first measured for the solution. The physical properties can be defined in the form of a set of solution property equations. The measured physical property values are then inserted into the solution property equations. When the equations are simultaneously solved, the desired concentration of the acid or basic component can be determined.
    Type: Application
    Filed: January 30, 2001
    Publication date: October 3, 2002
    Applicant: General Electric Company
    Inventors: Leo Spitz MacDonald, Himanshu Bachubhai Vakil, Edward Brittain Stokes, D Sangeeta, Howard John Farr
  • Method for applying coatings on substrates
    Publication number: 20020094445
    Abstract: A method for forming a metal-containing layer on a substrate is disclosed. A slurry of the metal is first deposited on the substrate; followed by heating to remove volatile material from the slurry, and to form a layer of the metal. In another embodiment, a slurry of aluminum is deposited over the slurry of the metal, before or after the metal has been heat-treated to some degree. A diffusion heat treatment results in a coating which includes the noble-metal aluminide compound. Related articles are also disclosed.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 18, 2002
    Inventors: D. Sangeeta, Howard John Farr
  • Caustic process for replacing a thermal barrier coating
    Patent number: 6146692
    Abstract: An aqueous caustic process can be used for replacing a thermal barrier coating on a metal surface. In the process, the metal surface is contacted with a caustic solution to remove the thermal barrier coating. The processing conditions for contacting the caustic solution are selected to avoid the formation of a peel layer during a subsequent application of a replacement thermal barrier coating and heat treatment. A replacement thermal barrier coating is then reapplied to the metal surface.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: November 14, 2000
    Assignee: General Electric Company
    Inventors: D. Sangeeta, Howard John Farr, Roger Dale Wustman