Patents by Inventor Yoshikatu Tokunaga

Yoshikatu Tokunaga 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).

  • Cooling system for heating body
    Patent number: 4862321
    Abstract: The present invention relates to a cooling system for a heating body to cool the heating body by ebullition and evaporation of a liquid refrigerant, wherein a liquid return pipe passing through a connecting pipe which connects an evaporation vessel and a condenser is branched off from said connecting pipe on the evaporation vessel side to open at its one end in the bottom of said evaporation vessel, in order to smooth the return of the refrigerant evaporated and liquified again into the evaporation vessel and to maintain a stable cooling effect.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: August 29, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Shuuji Saitoo, Yoshikatu Tokunaga