Patents by Inventor Thomas R. Pinkowski

Thomas R. Pinkowski 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).

  • Method for increasing tap density of molybdenum powder
    Patent number: 6022395
    Abstract: A method is provided for producing molybdenum metal powders having consistently high tap densities. The method involves doping an ammonium molybdate solution with a soluble potassium compound, forming an ammonium dimolybdate precipitate and reducing the precipitate to form a metal powder.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: February 8, 2000
    Assignee: Osram Sylvania Inc.
    Inventors: Jeffrey A. Eckert, David C. Sheppeck, James N. Christini, Thomas R. Pinkowski
  • Method of producing monotungsten carbide powder
    Patent number: 4664899
    Abstract: Tungsten carbide is produced by mixing tungsten oxide or ammonium paratungstate with carbon to form a mixture which is substantially reduced in a non-reducing atmosphere in the presence of sufficient carbon to produce a carbon content in the resulting mixture of less than seven percent by weight, and adding sufficient carbon to the resulting reduced mixture to increase the carbon content to at least the stoichiometric amount needed to form monotungsten carbide prior to carburization of the mixture to monotungsten carbide.
    Type: Grant
    Filed: June 15, 1983
    Date of Patent: May 12, 1987
    Assignee: GTE Products Corporation
    Inventors: Edward R. Kimmel, Mary E. Shaffer, Thomas R. Pinkowski, Geoffrey L. Harris