Patents Assigned to Idemitsu Petrolchemical Co., Ltd.
  • Method for producing thermoelectric elements
    Patent number: 5069868
    Abstract: Thermoelectric elements with excellent thermoelectric characteristics such as Seebeck coefficient thermoelectromotive force and thermal conductivity can be produced by molding a powder of metal or metal alloy as the raw material and then sintering; by using as such raw material, ultra fine powders containing Fe and Si as main components and having a mean particle diameter of 50 to 5,000.ANG..
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: December 3, 1991
    Assignee: Idemitsu Petrolchemical Co., Ltd.
    Inventors: Takeo Tokiai, Takashi Uesugi