Patents by Inventor Tetsuya Furuuchi

Tetsuya Furuuchi 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 exchange tube having a grooved inner surface
    Patent number: 6298909
    Abstract: With a grooved-inner-surface heat transfer tube, an inner circumferential surface of a metal tube is formed with fins bent at bent portions in a zigzag and extending consecutively around a circumferential direction of the inner circumferential surface, and at at least a part of the bent portions of the fins, the height of the fins is set at 30 to 90% of the height of the fins excluding the bend portions. With such a heat transfer tube, pressure loss can be suppressed while increasing heat exchange performance.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: October 9, 2001
    Assignee: Mitsubishi Shindoh Co. Ltd.
    Inventors: Takao Fukatami, Tetsuya Furuuchi, Shin Kikuchi, Shunroku Sukumoda