Patents by Inventor Sadayasu Ueno

Sadayasu Ueno 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).

  • Temperature sensor
    Patent number: 4058787
    Abstract: A drawer type electrode of a thermistor for sensing high temperatures, wherein a shaft and a sheath are connected to a thermistor, is constructed such that the shaft and the sheath are brought into contact with the positive and negative electrode surfaces of the thermistor through precious metal chips so that electrical connection between the precious metals, the shaft and the sheath will not be impaired in any way even if oxidation penetrates into the interior from the shaft and the sheath surface due to high temperature.
    Type: Grant
    Filed: March 23, 1976
    Date of Patent: November 15, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Norio Ichikawa, Sadayasu Ueno
  • Variable inductor
    Patent number: 4031496
    Abstract: A variable inductor wherein two closed magnetic circuits each having a predetermined gap in one place are constructed of a movable magnetic core and a fixed magnetic core. When the movable magnetic core is moved, the opposite area between both the magnetic cores in one of the closed magnetic circuits increases, while the opposite area between both the magnetic cores in the other closed magnetic circuit decreases. Thus, the inductances of coils wound around parts of the respective closed magnetic circuits vary complementarily.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: June 21, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Fujiwara, Yukio Ichinose, Satoshi Taniguchi, Tsutomu Kobayashi, Kazuo Ichino, Michiyasu Itoh, Yasutaro Uesaka, Fumiyuki Inose, Sadayasu Ueno