Patents by Inventor Kazuharu Hattori

Kazuharu Hattori 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).

  • Process for removing chromide coatings from metal substrates, and related compositions
    Patent number: 6953533
    Abstract: A method for removing a chromide coating from the surface of a substrate is described. The coating is treated with a composition which includes an acid having the formula HxAF6, where “A” can be Si, Ge, Ti, Zr, Al, or Ga; and x is 1–6. An exemplary acid is hexafluorosilicic acid. The composition may also include a second acid, such as phosphoric acid or nitric acid. In some instances, a third acid is employed, such as hydrochloric acid. A related repair method for replacing a worn or damaged chromide coating is described. The coating is often applied to portions of turbine engine components made from superalloy materials.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: October 11, 2005
    Assignee: General Electric Company
    Inventors: Lawrence Bernard Kool, Kenneth Burrell Potter, William Randall Thompson, David Carr, Kiyokazu Watanabe, Minoru Ishida, Kazuharu Hattori
  • PROCESS FOR REMOVING CHROMIDE COATINGS FROM METAL SUBSTRATES, AND RELATED COMPOSITIONS
    Publication number: 20050115926
    Abstract: A method for removing a chromide coating from the surface of a substrate is described. The coating is treated with a composition which includes an acid having the formula HxAF6, where “A” can be Si, Ge, Ti, Zr, Al, or Ga; and x is 1-6. An exemplary acid is hexafluorosilicic acid. The composition may also include a second acid, such as phosphoric acid or nitric acid. In some instances, a third acid is employed, such as hydrochloric acid. A related repair method for replacing a worn or damaged chromide coating is described. The coating is often applied to portions of turbine engine components made from superalloy materials.
    Type: Application
    Filed: June 16, 2003
    Publication date: June 2, 2005
    Inventors: Lawrence Kool, Kenneth Potter, William Thompson, David Carr, Kiyokazu Watanabe, Minoru Ishida, Kazuharu Hattori