Patents by Inventor Kengi Negura

Kengi Negura 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).

  • Aluminum material for brazing, method of manufacturing same, and method of manufacturing heat exchanger made of aluminum alloy
    Patent number: 4901908
    Abstract: An aluminum material for brazing, comprising a core made of aluminum or an aluminum alloy, and a layer coated on the surface of the core. The layer is made of zinc or an alloy of zinc-and-aluminum and a brazing alloy having a melting point which is lower than that of the core by a predetermined value. The zinc or the alloy of zinc-and-aluminum and the brazing alloy have different melting points. Also disclosed are a method of manufacturing an aluminum material for brazing and a method of manufacturing an aluminum alloy heat exchanger by use of the Al material for brazing.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: February 20, 1990
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kengi Negura, Ken Yamamoto, Shigeo Ito, Masahiro Shimoya