Patents by Inventor Nobuyuki Hukuda

Nobuyuki Hukuda 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).

  • Apparatus and a method of manufacturing a crystal
    Patent number: 6270575
    Abstract: A value of electric current flowing a neck to a melt is detected, and it is judged that a breaking of the neck occurs when the detected value has been zero, and then a seed is lowered to dip a broken part on the melt. After that the seed is lifted again to restart a pulling operation.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: August 7, 2001
    Assignee: Komatsu Electronic Metals Co., Ltd.
    Inventors: Shoei Kurosaka, Makoto Kamogawa, Nobuyuki Hukuda, Junsuke Tomioka