Patents by Inventor Yujirou Ishihara

Yujirou Ishihara 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 PRODUCING GROUP 13 NITRIDE SINGLE CRYSTAL AND APPARATUS FOR PRODUCING GROUP 13 NITRIDE SINGLE CRYSTAL
    Publication number: 20180163323
    Abstract: A method for producing a group 13 nitride single crystal includes dissolving and crystal growing. The dissolving includes dissolving nitrogen in a mixed melt in a reaction vessel that contains the mixed melt, a seed crystal, and a surrounding member. The mixed melt contains an alkali metal and a group 13 metal. The seed crystal is a seed crystal that is placed in the mixed melt and includes a group 13 nitride crystal in which a principal face is a c-plane. The surrounding member is arranged so as to surround the entire area of a side face of the seed crystal. The crystal growing includes growing a group 13 nitride crystal on the seed crystal.
    Type: Application
    Filed: February 8, 2018
    Publication date: June 14, 2018
    Inventors: Takashi Satoh, Naoya Miyoshi, Junichi Wada, Masahiro Hayashi, Seiji Sarayama, Haruo Sunakawa, Yujirou Ishihara, Akira Usui