Patents by Inventor Susumu Amagai

Susumu Amagai 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).

  • Heat shield for an exhaust tail pipe
    Patent number: 4085816
    Abstract: A heat shield surrounds an exhaust tail pipe of an internal combustion engine so as to define a certain thickness of an insulating layer of air between the shield and the tail pipe.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: April 25, 1978
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Susumu Amagai, Shizuya Kawai, Hiroyasu Kan, Hideo Aizawa
  • Intake air warming device
    Patent number: 4050430
    Abstract: A first air-warming chamber partially surrounds a second air-warming chamber, which is disposed about an exhaust pipe. Air is passed through the first then second chambers in a zigzag flow path. The prewarmed air entering the second chamber is further heated to a desired level.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: September 27, 1977
    Assignee: Nissan Motor Co., Limited
    Inventors: Susumu Amagai, Shigeru Oikawa