Patents by Inventor Tsuyoshi Sadamatsu

Tsuyoshi Sadamatsu 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).

  • Seed crystal and method of manufacturing single crystal
    Patent number: 6171393
    Abstract: A seed crystal 1 for manufacturing a single crystal incorporating an unconformity portion B formed at a predetermined position apart from a leading end thereof and structured to conduct the heat of melt and interrupt propagation of dislocation caused from thermal stress produced when dipping in the melt has been performed.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: January 9, 2001
    Assignee: Komatsu Electronic Metals Co., Ltd.
    Inventors: Shoei Kurosaka, Junsuke Tomioka, Masakazu Kobayashi, Shuji Onoue, Tsuyoshi Sadamatsu