Patents by Inventor Yoshiki Takagiwa

Yoshiki Takagiwa 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).

  • Thermoelectric material, method for producing (manufacturing) same and thermoelectric power generation module using same
    Patent number: 11527693
    Abstract: Provided is a thermoelectric material having an intermetallic compound in an Al—Fe—Si system as a main component, exhibiting a thermoelectric effect in a temperature range from a room temperature to 600° C., and becoming a p-type or n-type thermoelectric material by a composition control, a manufacturing method thereof, and a thermoelectric power generation module thereof. A thermoelectric material according to the present invention including at least Al, Fe, and Si and represented by a general formula of Al12+p?qFe38.5+3qSi49.5?p?2q (where p satisfies 0?p?16.5 and q satisfies ?0.34?q?0.34) and including a phase represented by Al2Fe3Si3 as a main phase.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: December 13, 2022
    Assignee: National Institute for Materials Science
    Inventor: Yoshiki Takagiwa
  • THERMOELECTRIC MATERIAL, METHOD FOR PRODUCING (MANUFACTURING) SAME AND THERMOELECTRIC POWER GENERATION MODULE USING SAME
    Publication number: 20200365791
    Abstract: Provided is a thermoelectric material having an intermetallic compound in an Al—Fe—Si system as a main component, exhibiting a thermoelectric effect in a temperature range from a room temperature to 600° C., and becoming a p-type or n-type thermoelectric material by a composition control, a manufacturing method thereof, and a thermoelectric power generation module thereof. A thermoelectric material according to the present invention including at least Al, Fe, and Si and represented by a general formula of Al22+p?qFe38.5+3qSi49.5?p?2q (where p satisfies 0?p?16.5 and q satisfies ?0.34?q?0.34) and including a phase represented by Al2Fe3Si3 as a main phase.
    Type: Application
    Filed: August 29, 2018
    Publication date: November 19, 2020
    Applicant: National Institute for Materials Science
    Inventor: Yoshiki Takagiwa