Patents by Inventor Takashi Konishi

Takashi Konishi 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).

  • Processes for producing aromatic/aliphatic copolycarbonate
    Patent number: 6265523
    Abstract: Processes for producing an aromatic/aliphatic copolycarbonate which has excellent impact resistance, excellent heat resistance, a high Abbe's number, a low photoelastic coefficient, and an excellent color tone.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: July 24, 2001
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Satoshi Nagai, Osamu Kondo, Shu Yoshida, Makoto Sasaki, Takashi Konishi, Takayasu Fujimori
  • Method for evaluating residual fatigue life of mechanical parts
    Patent number: 4709383
    Abstract: A method for evaluating a residual fatigue life of mechanical parts, consisting of the steps of grinding a surface layer of a mechanical part to be inspected by a minute amount to form an inspection surface, measuring half-width data of an X-ray diffraction intensity curve on the inspection surface, calculating a depth (do) of a fatigue damaged region from a graph of a half-width ratio (H/Ho) versus a depth (d) below the surface layer, and determining a fraction of fatigue life N/Nf on the basis of data of the depth (do) of the defective region versus the fraction of fatigue life N/Nf which were separately obtained from a test piece.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: November 24, 1987
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Touru Goto, Takashi Konishi