Patents by Inventor Tadayoshi Karasawa

Tadayoshi Karasawa 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).

  • Process for producing magnetic metallic oxide
    Patent number: 4543197
    Abstract: A process for producing magnetic metallic oxide which comprises the steps of pulverizing at least one member selected from the group consisting of ferro-manganese, ferro-nickel, electrolytic manganese, electrolytic iron and electrolytic zinc, adding to the substance thus pulverized at least one member selected from the group consisting of oxides of Fe, Mn, Ni, Cu, Mg, Zn and Co and salts of Fe, Mn, Ni, Cu, Mg, Zn and Co which become oxides by heating, wet pulverizing and mixing the mixture upon oxidation, thereby producing a slurry, and heating said slurry at 800.degree. to 1450.degree. C. By this process, a magnetic ferrite can be stably and inexpensively synthesized.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: September 24, 1985
    Assignees: Japan Metals & Chemicals Co., Ltd., Magune Co., Ltd.
    Inventors: Tadayoshi Karasawa, Katsumi Kawano, Katsuji Uchiyama, Michio Yamazaki
  • Cassette receiving tool for semiconductor manufacturing apparatus
    Patent number: D868012
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: November 26, 2019
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventor: Tadayoshi Karasawa
  • Cassette receiving tool for semiconductor manufacturing apparatus
    Patent number: D868013
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: November 26, 2019
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventor: Tadayoshi Karasawa
  • Cassette displacement prevention jig of semiconductor manufacturing apparatus
    Patent number: D877706
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: March 10, 2020
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventor: Tadayoshi Karasawa
  • Dolly for replacing reactor tubes
    Patent number: D919223
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: May 11, 2021
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventors: Tadayoshi Karasawa, Takao Kasamatsu