Patents by Inventor Ryouma Tsukuda

Ryouma Tsukuda 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 thermoelectric material
    Patent number: 6403875
    Abstract: A process for producing a thermoelectric material comprising mixing at least two of bismuth, tellurium, selenium, and antimony and, if desired, a dopant, melting the mixture, grinding the resulting alloy ingot, forming the powder, and sintering the green body under normal pressure, or hot pressing the powder, wherein the grinding and the normal sintering or hot pressing are carried out in the presence of a solvent represented by CnH2n+1OH or CnH2n+2CO (wherein n is 1, 2 or 3).
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: June 11, 2002
    Assignee: Mitsui Mining & Smelting Company, Ltd.
    Inventors: Shinji Karino, Ryouma Tsukuda, Yuichi Anno, Isamu Yashima, Hitoshi Kajino
  • Process for producing thermoelectric material
    Publication number: 20020044877
    Abstract: A process for producing a thermoelectric material comprising mixing at least two of bismuth, tellurium, selenium, and antimony and, if desired, a dopant, melting the mixture, grinding the resulting alloy ingot, forming the powder, and sintering the green body under normal pressure, or hot pressing the powder, wherein the grinding and the normal sintering or hot pressing are carried out in the presence of a solvent represented by CnH2n+1OH or CnH2n+2CO (wherein n is 1, 2 or 3).
    Type: Application
    Filed: February 23, 2001
    Publication date: April 18, 2002
    Inventors: Shinji Karino, Ryouma Tsukuda, Yuichi Anno, Isamu Yashima, Hitoshi Kajino