Patents by Inventor Kiichi Akasaka

Kiichi Akasaka 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).

  • Copper radiator for motor cars excellent in corrosion resistance and method of manufacturing the same
    Patent number: 4898318
    Abstract: An improved copper radiator for motor cars comprising a plurality of tubes adapted for the flow of a heat-exchanging medium therethrough, fins bonded directly with solder to said tubes to form a copper core and wherein said core is bonded with solder to at least one seat plate, the improvement in that the surface of the fins of said copper radiator has an oxidized layer of a thickness of not more than 1200 .ANG..
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: February 6, 1990
    Assignees: The Furukawa Electric Co., Ltd., Nippondenso Co., Ltd.
    Inventors: Syoji Shiga, Akira Matsuda, Nobuyuki Shibata, Kiichi Akasaka
  • Copper radiator for motor cars excellent in corrosion resistance and method of manufacturing
    Patent number: 4775004
    Abstract: An improved copper radiator for motor cars comprising a plurality of tubes adapted for the flow of a heat-exchanging medium therethrough, fins bonded directly with solder to said tubes to form a copper core and wherein said core is bonded with solder to at least one seat plate, the improvement in that the surface of the fins of said copper radiator has an oxidized layer of a thickness of not more than 1200 .ANG..
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: October 4, 1988
    Assignees: The Furukawa Electric Co., Ltd., Nippondenso Co., Ltd.
    Inventors: Syoji Shiga, Akira Matsuda, Nobuyuki Shibata, Kiichi Akasaka
  • Radiator for motor cars
    Patent number: 4741394
    Abstract: In a radiator for motor cars wherein fins are fitted between vertical tubes through which the heat-exchanging medium flows to form a core and tube plates are provided at both ends of the tubes of said core to connect with a resinous tank, a concave groove is formed outside the peripheral portion thereof, and an elastic seal member is provided in said concave groove to insert the open end of the resinous tank, the improvement wherein said tube plates are .alpha. brass containing 15-38 wt. % Zn, 0.05-1.5 wt. % Si, and the remainder Cu.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: May 3, 1988
    Assignees: The Furukawa Electric Co., Ltd., Nippondenso Co., Ltd.
    Inventors: Toru Tanigawa, Shoji Shiga, Kiichi Akasaka, Yoshimasa Oyama