Patents by Inventor Kimihito Hitotsumatsu

Kimihito Hitotsumatsu 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 oil composition
    Patent number: 7625850
    Abstract: A high-temperature lubricating oil composition is provided, which is resistant to hardening and sludge formation, and displays minimal evaporation loss and superior thermal stability, even under practical high-temperature open system conditions such as those found in a tenter. A lubricating oil composition that provides excellent lubrication without damaging members used within working machinery is also provided. The lubricating oil composition comprises a polyolester based synthetic oil and a C12 to C72 fatty acid and/or a diphenylamine derivative containing an arylalkyl group with a number average molecular weight of 400 to 800.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: December 1, 2009
    Assignees: Mitsubishi Heavy Industries, Ltd., Sato Special Oil Co., Ltd.
    Inventors: Norihisa Horaguchi, Shiki Matsuo, Hideo Kometani, Naomoto Ishikawa, Tatsushi Seko, Yusuke Kinoshita, Masaru Seto, Kimihito Hitotsumatsu
  • Lubricating oil composition
    Publication number: 20050222000
    Abstract: A high-temperature lubricating oil composition is provided, which is resistant to hardening and sludge formation, and displays minimal evaporation loss and superior thermal stability, even under practical high-temperature open system conditions such as those found in a tenter. A lubricating oil composition that provides excellent lubrication without damaging members used within working machinery is also provided. The lubricating oil composition comprises a polyolester based synthetic oil and a C12 to C72 fatty acid and/or a diphenylamine derivative containing an arylalkyl group with a number average molecular weight of 400 to 800.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 6, 2005
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., SATO SPECIAL OIL CO., LTD.
    Inventors: Norihisa Horaguchi, Shiki Matsuo, Hideo Kometani, Naomoto Ishikawa, Tatsushi Seko, Yusuke Kinoshita, Masaru Seto, Kimihito Hitotsumatsu