Patents by Inventor Kenzo Yoshida

Kenzo Yoshida 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).

  • Super highly radiation-resistant grease
    Patent number: 4753741
    Abstract: A radiation-resistant grease that is stable under elevated temperatures is disclosed. The grease is prepared by mixing a bentonite-based thickening agent with a base oil composed of m-(m-phenoxyphenoxy)diphenyl, pentaphenyl ether, a monoalkyltriphenyl ether or a monoalkyltetraphenyl ether (provided that the alkyl group contains 6-20 carbon atoms). To the mixture is added, if necessary, a gelling aid composed of an aliphatic alcohol, an aliphatic ketone and/or an aliphatic carbonate ester.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: June 28, 1988
    Assignees: Japan Atomic Energy Research Institute, Matsumura Oil Research Corporation
    Inventors: Kazuo Arakawa, Tsuneo Sasuga, Miyuki Hagiwara, Naohiro Hayakawa, Kenzo Yoshida, Hiroshi Nakanishi, Mitsuo Hirohama, Tetsuya Yagi, Tamio Akada, Takao Soda
  • Radiation-resistant grease
    Patent number: 4711732
    Abstract: A radiation-resistant grease employed in various machines at nuclear facilities, based on (A) an oil principally composed of a phenoxyphenoxydiphenyl and a mono- and/or dialkyldiphenyl ether and (B) a bentonite based thickening agent, if necessary, together with (C) a gelling aid of alcohol, ketone, or carbonate ester.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: December 8, 1987
    Assignees: Japan Atomic Energy Research Institute, Matsumura Oil Research Corporation
    Inventors: Kazuo Arakawa, Naohiro Hayakawa, Kenzo Yoshida, Tetsuya Yagi, Hiroshi Nakanishi
  • Lubricating oil blend resistant to ionizing radiation
    Patent number: 4664829
    Abstract: An oil blend having resistance to ionizing radiation comprising the following components is herein disclosed:A. 25 to 75 wt % of 0-70 wt % of o-(m-phenoxyphenoxy)diphenyl and 100-30 wt % of m-(m-phenoxyphenoxy)diphenyl; andB. 75 to 25 wt % of a monoalkyldiphenyl ether or dialkyldiphenyl ether.This oil blend has a pour point of 0.degree. C. or below and has a G-value of 0.1 or lower for the evolution of decomposition gases under irradiation with ionizing radiation. Said ethers have 10 to 20 carbon atoms in the alkyl moiety.
    Type: Grant
    Filed: April 5, 1985
    Date of Patent: May 12, 1987
    Assignees: Japan Atomic Energy Research Institute, Matsumura Oil Research Corporation
    Inventors: Kazuo Arakawa, Naohiro Hayakawa, Kenzo Yoshida, Naoyuki Tamura, Hiroshi Nakanishi, Tetsuya Yagi, Shintaro Kuroiwa
  • Microwave oven
    Patent number: D299306
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: January 10, 1989
    Assignee: Sharp Corporation
    Inventor: Kenzo Yoshida
  • Microwave oven
    Patent number: D301006
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: May 9, 1989
    Assignee: Sharp Corporation
    Inventor: Kenzo Yoshida
  • Microwave oven
    Patent number: D301959
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: July 4, 1989
    Assignee: Sharp Corporation
    Inventors: Hiromichi Yamada, Kenzo Yoshida
  • Microwave oven
    Patent number: D302373
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: July 25, 1989
    Assignee: Sharp Corporation
    Inventor: Kenzo Yoshida
  • Microwave oven
    Patent number: D302374
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: July 25, 1989
    Assignee: Sharp Corporation
    Inventor: Kenzo Yoshida
  • Microwave oven
    Patent number: D302927
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: August 22, 1989
    Assignee: Sharp Corporation
    Inventor: Kenzo Yoshida
  • Facsimile
    Patent number: D322781
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: December 31, 1991
    Assignee: Sharp Corporation
    Inventor: Kenzo Yoshida
  • Facsimile
    Patent number: D331756
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: December 15, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaji Sawada, Akira Tsukada, Kenzo Yoshida, Takeshi Kodera