Patents by Inventor Hamashima Hiroshi

Hamashima Hiroshi 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).

  • Electrostatic removing member having semiconductive zirconia sintered body
    Patent number: 6602813
    Abstract: An electrostatic removing member includes a semiconductive zirconia sintered body having a volume specific resistance value from 105 to 109&OHgr;·cm. Preferably, the semiconductive zirconia sintered body includes 60 to 90 weight % of ZrO2, a stabilizing agent, and 10 to 40 weight % of one or more of oxides of Fe, Co, Ni and Cr. In one embodiment, the semiconductive zirconia sintering body at least partially forms a gripper.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: August 5, 2003
    Assignee: Kyocera Corporation
    Inventors: Mikaki Shinji, Hamashima Hiroshi, Iwasaki Koichi, Iwamoto Kuniharu, Nakahara Masahiro, Okumura Masahiro, Hino Shouji, Nabeshima Yutaka
  • Semiconductive zirconia sintering body and electrostatic removing member constructed by semiconductive zirconia sintering body
    Publication number: 20020010069
    Abstract: The invention provides a semiconductive zirconia sintering body able to be manufactured simply and cheaply and escape static electricity at suitable speed without greatly reducing mechanical characteristics of zirconia.
    Type: Application
    Filed: May 10, 2001
    Publication date: January 24, 2002
    Applicant: Kyocera Corperation
    Inventors: Mikaki Shinji, Hamashima Hiroshi, Iwasaki Koichi, Iwamoto Kuniharu, Nakahara Masahiro, Okumura Masahiro, Hino Shouji, Nabeshima Yutaka
  • Semiconductive zirconia sintering body and electrostatic removing member constructed by semiconductive zirconia sintering body
    Patent number: 6274524
    Abstract: The invention provides a semiconductive zirconia sintering body able to be manufactured simply and cheaply and escape static electricity at suitable speed without greatly reducing mechanical characteristics of zirconia. 10 to 40 weight % of one kind or more of oxides of Fe, Co, Ni and Cr as conductivity giving agents is included with respect to 60 to 90 weight % of ZrO2 including a stabilizing agent so that a semiconductive zirconia sintering body having a volume specific resistance value from 105 to 109 &OHgr;·cm is formed.
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: August 14, 2001
    Assignee: Kyocera Corporation
    Inventors: Mikaki Shinji, Hamashima Hiroshi, Iwasaki Koichi, Iwamoto Kuniharu, Nakahara Masahiro, Okumura Masahiro, Hino Shouji, Nabeshima Yutaka