Patents by Inventor Richard J. Meehan, deceased

Richard J. Meehan, deceased 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).

  • Shielding gas for laser welding
    Patent number: 3939323
    Abstract: Helium and helium base gas mixtures such as helium-hydrogen; helium-oxygen and helium-carbon dioxide have been found to improve weld penetration when used with presently available lasers to weld most steels.
    Type: Grant
    Filed: August 13, 1974
    Date of Patent: February 17, 1976
    Assignee: Union Carbide Corporation
    Inventors: Richard J. Meehan, deceased, Richard H. Rein, Ralph H. Willgohs