Patents by Inventor Michio Inagaki

Michio Inagaki 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).

  • Graphite interlaminar compound and method for producing the same
    Patent number: 5346650
    Abstract: Graphite intercalation compound interposing at least PbCl.sub.2 interlaminarly among graphite, synthesized by mixing a raw material graphite, PbCl.sub.2, and a metal halide other than PbCl.sub.2 and heating the mixture.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: September 13, 1994
    Assignee: Alps Electric Co., Ltd.
    Inventors: Osamu Toda, Michio Inagaki, Masahiko Ohhira
  • Method and apparatus for electron beam welding
    Patent number: 4309589
    Abstract: A method and an apparatus for electron beam welding, in which the oscillation of the focus of an electron beam which is due to the pulsation of a direct-current high voltage for accelerating electrons is detected, and the electron beam is controlled according to the detected oscillation of the focus of the electron beam.
    Type: Grant
    Filed: March 21, 1979
    Date of Patent: January 5, 1982
    Assignee: National Research Institute for Metals
    Inventors: Tatsuya Hashimoto, Michio Inagaki, Hirosada Irie, Susumu Tukamoto
  • Method of detecting the state of fusion of the workpiece in welding
    Patent number: 3988567
    Abstract: In welding a workpiece from its one side by arc or electron beam welding, a method of detecting the state of fusion of the workpiece which comprises superposing on the arc or electron beam current a signal current selected from the group consisting of positive and negative pulse currents and sinusoidal current to change the heat input applied to the workpiece at the side where the arc or electron beam has been applied, and measuring the waveforms and/or phase differences of the change of said heat input and the corresponding change of temperature at the opposite side of the workpiece, whereby the state of fusion of the workpiece is detected.
    Type: Grant
    Filed: March 25, 1975
    Date of Patent: October 26, 1976
    Assignee: National Research Institute for Metals
    Inventors: Akira Okada, Michio Inagaki