Patents by Inventor Hideo Iwasawa

Hideo Iwasawa 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: 5996390
    Abstract: In accordance with the present invention, the method of manufacturing a vacuum chamber which is used as a cluster tool, a vacuum film-forming apparatus, or the like of a manufacturing apparatus used for semiconductors, liquid crystals, solar cells, and the like, and which is formed by a vessel in which an opening (4A) is provided at one surface for forming a cover, and a hole (4) smaller than the opening (4A) is provided in an opposite surface to the opening (4A), includes the steps of:by using a forging press which is provided with an outer die (3) and an inner die (2) for die forging a material (1-1),cutting the material to dimensions suitable for the die forging of the material (1-1) which is made of a metal;heating the material (1-1) to a temperature for die forging;placing the heated material (1-1) in the outer die (3) of the press, and pressing the inner die (2) against the material (1-1) by the forging press to effect forging; andsubjecting the forged material to machining into a predetermined configur
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: December 7, 1999
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Hiroshi Tsujikawa, Koji Shinobudani, Yosiki Ogata, Takashi Iwamoto, Shinichi Ono, Hideo Iwasawa
  • Patent number: 3946427
    Abstract: In a semiconductor device, the surface of a semiconductor element is covered with a silicone varnish in which the side chain radical ratio between methyl radicals and phenyl radicals is 20:1 or greater, whereby the element is effectively shielded from the external moisture.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: March 23, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Iwasawa, Yoshiaki Wakashima, Hideo Inayoshi