Patents by Inventor Rong-Chein R. Wu

Rong-Chein R. Wu 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: 8715386
    Abstract: In various embodiments, low-oxygen metal powder is produced by heating a metal powder to a temperature at which an oxide of the metal powder becomes thermodynamically unstable and applying a pressure to volatilize the oxygen.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: May 6, 2014
    Assignee: H.C. Starck Inc.
    Inventors: Leonid N. Shekhter, Steven A. Miller, Leah F. Haywiser, Rong-Chein R. Wu
  • Publication number: 20120291592
    Abstract: In various embodiments, low-oxygen metal powder is produced by heating a metal powder to a temperature at which an oxide of the metal powder becomes thermodynamically unstable and applying a pressure to volatilize the oxygen.
    Type: Application
    Filed: June 21, 2012
    Publication date: November 22, 2012
    Applicant: H. C. Starck Inc.
    Inventors: Leonid N. Shekhter, Steven a. Miller, Leah F. Haywiser, Rong-Chein R. Wu
  • Patent number: 7276225
    Abstract: A process for producing valve metal oxides, such as tantalum pentoxide or niobium pentoxide with a narrow particle size distribution within a desired particle size range, is provided. According to the process of the present invention, the valve metal fraction from digestion of valve metal material containing ore is processed under controlled temperature, pH, and residence time conditions to produce the valve metal pentoxide and pentoxide hydrates. Also, disclosed are new tantalum pentoxide and niobium pentoxide products and new tantalum pentoxide precursors and niobium pentoxide precursors.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: October 2, 2007
    Assignee: Cabot Corporation
    Inventors: Patrick M. Brown, Rong-Chein R. Wu, Raymond C. Pedicone, Michael G. Madara
  • Patent number: 6984370
    Abstract: A process for producing valve metal oxides, such as tantalum pentoxide or niobium pentoxide with a narrow particle size distribution within a desired particle size range, is provided. According to the process of the present invention, the valve metal fraction from digestion of valve metal material containing ore is processed under controlled temperature, pH, and residence time conditions to produce the valve metal pentoxide and pentoxide hydrates. Also, disclosed are new tantalum pentoxide and niobium pentoxide products and new tantalum pentoxide precursors and niobium pentoxide precursors.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: January 10, 2006
    Assignee: Cabot Corporation
    Inventors: Patrick M. Brown, Rong-Chein R. Wu, Raymond C. Pedicone, Michael G. Madara
  • Publication number: 20030082097
    Abstract: A process for producing valve metal oxides, such as tantalum pentoxide or niobium pentoxide with a narrow particle size distribution within a desired particle size range, is provided. According to the process of the present invention, the valve metal fraction from digestion of valve metal material containing ore is processed under controlled temperature, pH, and residence time conditions to produce the valve metal pentoxide and pentoxide hydrates. Also, disclosed are new tantalum pentoxide and niobium pentoxide products and new tantalum pentoxide precursors and niobium pentoxide precursors.
    Type: Application
    Filed: January 14, 2002
    Publication date: May 1, 2003
    Inventors: Patrick M. Brown, Rong-Chein R. Wu, Raymond C. Pedicone, Michael G. Madara
  • Patent number: 6338832
    Abstract: A process for producing valve metal oxides, such as tantalum pentoxide or niobium pentoxide with a narrow particle size distribution within a desired particle size range, is provided. According to the process of the present invention, the valve metal fraction from digestion of valve metal material containing ore is processed under controlled temperature, pH, and residence time conditions to produce the valve metal pentoxide and pentoxide hydrates. Also, disclosed are new tantalum pentoxide and niobium pentoxide products and new tantalum pentoxide precursors and niobium pentoxide precursors.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: January 15, 2002
    Assignee: Cabot Corporation
    Inventors: Patrick M. Brown, Rong-Chein R. Wu, Raymond C. Pedicone, Michael G. Madara