Patents by Inventor Hans-Joachim Dorn

Hans-Joachim Dorn 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 repairing a coated component
    Patent number: 6569492
    Abstract: The invention relates to a process of repairing a MCrAlY-coating of an article, which has being exposed to the hot gases of, for example, a gas turbine. The MCrAlY-coating is examined and repaired only locally where it is needed and then, subsequently, on top of the MCrAlY-coating the article is aluminized and/or chromized, avoiding the stripping of the whole coating and re-coating over the entire surface of the article. This is for replenishing the coating of Al and/or Cr that become depleted during engine operation, in an easy, cost and time saving manner.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: May 27, 2003
    Assignee: Alstom Ltd
    Inventors: John Fernihough, Abdus S. Khan, Maxim Konter, Markus Oehl, Hans-Joachim Dorn
  • Process for repairing a coated component
    Publication number: 20010053410
    Abstract: The invention relates to a process of repairing a MCrAlY-coating of an article, which has being exposed to the hot gases of, for example, a gas turbine. The MCrAlY-coating is examined and repaired only locally where it is needed and then, subsequently, on top of the MCrAlY-coating the article is aluminized and/or chromized, avoiding the stripping of the whole coating and re-coating over the entire surface of the article. This is for replenishing the coating of Al and/or Cr that become depleted during engine operation, in an easy, cost and time saving manner.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 20, 2001
    Inventors: John Fernihough, Abdus S. Khan, Maxim Konter, Markus Oehl, Hans-Joachim Dorn