Patents by Inventor Ryuji Morishita

Ryuji Morishita 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 heat exchanger
    Patent number: 6006430
    Abstract: An aluminum heat exchanger includes laminated aluminum tubes and corrugated fins, a core portion receiving respective ends of tubes into sheet metals members, and iron or stainless steel inserts having high strength receiving U-shaped folded pieces of the sheet metal members contacting the corrugated fins at the outermost portion of the core portion. The tubes and the corrugated fins are held and pressed from both sides of the core portion by the inserts and the corrugated fins are protected from coming apart during a brazing operation.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: December 28, 1999
    Assignee: Nippondenso Co., Ltd.
    Inventors: Mikio Fukuoka, Yoshifumi Aki, Ryuji Morishita