Patents by Inventor James Andrew Hahn

James Andrew Hahn 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).

  • Protection of a gas turbine component by a vapor-deposited oxide coating
    Patent number: 6926928
    Abstract: A gas turbine component, such as a turbine disk or a turbine seal element, is protected by depositing an oxide coating on the gas turbine component. The deposition is performed by a vapor deposition process such as metal-organic chemical vapor deposition (MOCVD) to a coating thickness of from about 0.2 to about 50 micrometers, preferably from about 0.5 to about 3 micrometers. The deposited oxide may be an oxide of aluminum, silicon, tantalum, titanium, and chromium.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: August 9, 2005
    Assignee: General Electric Company
    Inventors: John Frederick Ackerman, Joseph Aloysius Heaney, Bangalore Aswatha Nagaraj, James Andrew Hahn, Michael James Weimer, Jon Conrad Schaeffer, William Scott Walston
  • Protection of a gas turbine component by a vapor-deposited oxide coating
    Publication number: 20040013802
    Abstract: A gas turbine component, such as a turbine disk or a turbine seal element, is protected by depositing an oxide coating on the gas turbine component. The deposition is performed by a vapor deposition process such as metal-organic chemical vapor deposition (MOCVD) to a coating thickness of from about 0.2 to about 50 micrometers, preferably from about 0.5 to about 3 micrometers. The deposited oxide may be an oxide of aluminum, silicon, tantalum, titanium, and chromium.
    Type: Application
    Filed: July 19, 2002
    Publication date: January 22, 2004
    Inventors: John Frederick Ackerman, Joseph Aloysius Heaney, Bangalore Aswatha Nagaraj, James Andrew Hahn, Michael James Weimer, Jon Conrad Schaeffer, William Scott Walston
  • Protecting a substrate with a multilayer oxide/phosphate coating having a temperature-stepped cure
    Patent number: 6616978
    Abstract: A substrate is protected by a multilayer protective coating having an oxide layer, and a phosphate/organic binder layer initially overlying the oxide layer. The multilayer protective coating is cured by first degassing the multilayer protective coating in a pre-cure degassing temperature range of from about 250° F. to about 500° F. for a time of at least about 30 minutes. The multilayer protective coating is thereafter heated to a curing temperature range of from about 1200° F. to about 1400° F. for a time of at least about 30 minutes.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: September 9, 2003
    Assignee: General Electric Company
    Inventors: Michael James Weimer, Joseph Aloysius Heaney, Bangalore Aswatha Nagaraj, James Andrew Hahn