Patents by Inventor Kouiti Akisawa

Kouiti Akisawa 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).

  • Folded heat exchanger with V-shaped convex portions
    Patent number: 9080819
    Abstract: In a heat exchanger in which a number of V-shaped convex portions are arranged in parallel at a surface of a fin, one of a pair of inclined convex portions forming a V-shape is arranged to be inclined to a plus side by an angle a relative to a circulation direction of a gas at a first plane of a fin, the other is arranged to be inclined to a minus side by an angle b, and both of them are arranged by asymmetric angles in a left and right direction, and at a second plane opposed to the first plane, the angles which are asymmetric in the left and right direction are made to be reverse to those of the first plane relative to the circulation direction of the gas.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: July 14, 2015
    Assignee: T.RAD Co., Ltd.
    Inventors: Kimiaki Nakano, Kiyoshi Sasaki, Kouiti Akisawa, Jun Ono, Toshikatsu Hachiya, Satoshi Sakuma, Eriko Watase
  • HEAT EXCHANGER
    Publication number: 20130087318
    Abstract: In a heat exchanger in which a number of V-shaped convex portions are arranged in parallel at a surface of a fin, one of a pair of inclined convex portions forming a V-shape is arranged to be inclined to a plus side by an angle a relative to a circulation direction of a gas at a first plane of a fin, the other is arranged to be inclined to a minus side by an angle b, and both of them are arranged by asymmetric angles in a left and right direction, and at a second plane opposed to the first plane, the angles which are asymmetric in the left and right direction are made to be reverse to those of the first plane relative to the circulation direction of the gas.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 11, 2013
    Applicant: T. RAD Co., Ltd.
    Inventors: Kimiaki NAKANO, Kiyoshi Sasaki, Kouiti Akisawa, Jun Ono, Toshikatsu Hachiya, Satoshi Sakuma, Eriko Watase