Patents by Inventor Akira Fujiyama

Akira Fujiyama 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).

  • Method of manufacturing plate type titanium heat exchanger
    Publication number: 20040069837
    Abstract: In a method of manufacturing a plate type titanium heat exchanger in which a plurality of titanium herringbone plates are laminated and flow paths are formed between the respective herringbone plates, after brazing materials are charged or coated to the joints between the herringbone plates, respectively, the herringbone plates are placed in a vacuum heating furnace, subjected to vacuum degas processing while being gradually heated, and joined to each other by brazing by being more heated after a prescribed vacuum pressure has been obtained.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 15, 2004
    Inventors: Akira Fujiyama, Lee Sang Youl, Yoshio Nakajima, Tadao Matsu