Patents by Inventor Kouichi Oshima

Kouichi Oshima 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).

  • Lubricating oils
    Patent number: 5372703
    Abstract: Lubricant base oils are made up essentially of 2-15% by weight of a total aromatics content, greater than 60% by weight of isoparaffins and monocyclic naphthenes in total, more than 30% by weight of alkylbenzenes in the total aromatics content and smaller than 4% by weight of tricyclic and tetracyclic aromatics in the total aromatics content. The base oil has great viscosity index, small pour point, high oxidative stability and heat stability and sufficient capability to dissolve sludge.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: December 13, 1994
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Kouzou Kamiya, Isao Honjo, Toshio Yoshida, Masaru Ushio, Jinichi Igarashi, Masakuni Hirata, Mitsuo Okada, Yuji Ikemoto, Kouichi Oshima, Hiroyuki Takashima
  • Plasma processing apparatus capable of detecting and regulating actual RF power at electrode within chamber
    Patent number: 5314603
    Abstract: A plasma processing apparatus has a process chamber and a pair of electrodes provided in the process chamber to oppose each other. An RF power supply outputs an RF power to be supplied to at least one of the pair of electrodes in the process chamber. A power detector detects an actual RF power to be applied to one of the electrodes in the process chamber. A controller controls the RF power output from the RF power supply to a predetermined value in accordance with the actual RF power detected by the power detector.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: May 24, 1994
    Assignee: Tokyo Electron Yamanashi Limited
    Inventors: Kazuhiko Sugiyama, Masafumi Shimizu, Yukio Naito, Eiichi Nishimura, Kouichi Oshima