Patents by Inventor Junichiro Hirohashi

Junichiro Hirohashi 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).

  • SACRIFICIAL CORROSION-PROTECTIVE ALUMINUM ALLOY FOR HEAT EXCHANGERS, HIGH CORROSION-RESISTANT ALUMINUM ALLOY COMPOSITE MATERIAL FOR HEAT EXCHANGERS, AND HEAT EXCHANGER USING THE SAID COMPOSITE MATERIAL
    Patent number: 6387540
    Abstract: There is disclosed a sacrificial corrosion-protective aluminum alloy for heat exchangers which contains Zn more than 4.0 wt % but 15.0 wt % or less, 0.1 to 3.0 wt % of Fe, and 0.2 to 3.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities. There is also disclosed an aluminum alloy composite material in which the said aluminum alloy is used as the sacrificial material and a heat exchanger using the aluminum alloy composite material. According to the aluminum alloy composite material, it is possible to prevent erosion of heat-exchanger tubes when refrigerant in tube is strongly alkaline and is flowing at a high flow rate.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: May 14, 2002
    Assignee: Calsonic Kansei Corporation
    Inventors: Yuji Yoshidomi, Junichiro Hirohashi