Patents by Inventor Etsuji Kakimoto

Etsuji Kakimoto 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).

  • Solid material for magnet
    Patent number: 7364628
    Abstract: A solid material for a magnet, comprising a rare-earth/iron/nitrogen/hydrogen system magnetic material.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: April 29, 2008
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Etsuji Kakimoto, Kiyotaka Dohke, Ichiro Shibasaki, Nobuyoshi Imaoka, Akira Chiba
  • Solid material for magnet
    Publication number: 20040149357
    Abstract: A solid material for a magnet, comprising a rare-earth/iron/nitrogen/hydrogen system magnetic material.
    Type: Application
    Filed: October 22, 2003
    Publication date: August 5, 2004
    Inventors: Etsuji Kakimoto, Kiyotaka Dohke, Ichiro Shibasaki, Nobuyoshi Imaoka, Akira Chiba
  • Golf club head and method for producing the same
    Patent number: 6099414
    Abstract: The present invention provides a golf club head comprising: a face section made of a low specific gravity metal not higher than 5; and a back face section made of a clad material in which the low specific gravity metal and a high specific gravity metal not lower than 7 are metallurgically bonded to each other in advance, wherein the low specific gravity metal of the face section and the low specific gravity metal of the clad material are integrally joined to each other by welding so as to form a club head. In this case, the methods of welding of TIG, plasma arc and laser beams are used in which a U-shaped and/or V-shaped groove is formed. In this golf club head, it is possible to improve the mechanical strength of the joint portion, and it is also possible to produce the golf club head in a short period of time.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: August 8, 2000
    Assignees: Nippon Steel Corporation, Fourteen Co., Ltd, Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Akihiko Kusano, Seiichi Soeda, Masaya Fukuda, Shigeru Chino, Takamitsu Takebayashi, Kenichi Miyazawa, Etsuji Kakimoto