Patents by Inventor Tadashi Kihara

Tadashi Kihara 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).

  • Raw material for production of GaAs crystals
    Patent number: 6635323
    Abstract: The present invention provides a raw material 1 used for production of GaAs crystals by utilizing solidification of melt, wherein As 12 is accommodated in the inside of Ga 10, 11. Because As 12 is covered with Ga 10, 11, As 12 is not brought into contact with the air and can thus be conveyed without oxidizing As 12. The raw material 1 can be heated and melted as such to produce GaAs crystals by the Czochralski method.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: October 21, 2003
    Inventors: Tadashi Kihara, Takeharu Yamamura, Kenichi Tayama
  • Raw material for production of GaAs crystals
    Publication number: 20010012547
    Abstract: The present invention provides a raw material 1 used for production of GaAs crystals by utilizing solidification of melt, wherein As 12 is accommodated in the inside of Ga 10, 11. Because As 12 is covered with Ga 10, 11, As 12 is not brought into contact with the air and can thus be conveyed without oxidizing As 12. The raw material 1 can be heated and melted as such to produce GaAs crystals by the Czochralski method.
    Type: Application
    Filed: February 6, 2001
    Publication date: August 9, 2001
    Inventors: Tadashi Kihara, Takeharu Yamamura, Kenichi Tayama