Patents by Inventor Beng J. Tan

Beng J. Tan 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).

  • Metal nitride powders
    Patent number: 5279808
    Abstract: A metal nitride powder can be made by heating a reactant powder that includes an oxide or hydroxide of Al, Ti, or Zr to a reaction temperature in a nonreactive atmosphere. The heated reactant powder is contacted with a gaseous reactant mixture comprising a nitrogen source and a carbon source. The molar ratio of nitrogen to carbon in the gaseous reactant mixture is at least about 15. The reactant powder is maintained at the reaction temperature for a sufficient time to convert a portion of it to metal nitride powder.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: January 18, 1994
    Assignee: United Technologies Corporation
    Inventors: Youming Xiao, Beng J. Tan, Steven L. Suib, Francis S. Galasso