Patents by Inventor Richard Litty

Richard Litty 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).

  • Patent number: 4923673
    Abstract: In a method for producing tungsten-alloyed rods, a particular tungsten electrodes for tungsten inert gas welding, tungsten plasma welding, tungsten plasma fusion cutting and the like, in which pulverulent tungsten with an admixed oxide additive is compacted, sintered, mechanically worked and submitted to a recrystallization treatment, to achieve a hitherto unobtained high lanthanum integration the pulverulent tungsten is alloyed with a highly pure relaxed lanthanum oxide additive of about 1.8 to 2.2% by weight with respect to the total weight the compacting is carried out with a multiphase pressure buildup and the sintering is carried out with a multiphase temperature buildup.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: May 8, 1990
    Assignee: Gesellschaft fur Wolfram-Industrie mbH
    Inventor: Richard Litty