Patents by Inventor Mitsugu Aoyama

Mitsugu Aoyama 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).

  • Laminated heat exchanger and refrigeration cycle
    Patent number: 6640579
    Abstract: A laminated heat exchanger includes a plurality of laminated plates, in which a plurality of heat transfer tubes bent into a zigzag form are arranged in contact with each surface of each of the plates, and the plates are laminated so that the heat transfer tubes on one of adjacent plates intersect with the heat transfer tubes on the other of the adjacent plates.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: November 4, 2003
    Assignee: Hitachi, Ltd. for the Benefit of Hitachi Air Conditioning Systems Co. Ltd.
    Inventors: Hitoshi Matsushima, Mari Uchida, Mitsugu Aoyama
  • Laminated heat exchanger and refrigeation cycle
    Publication number: 20030051501
    Abstract: A laminated heat exchanger includes a plurality of laminated plates, in which a plurality of heat transfer tubes bent into a zigzag form are arranged in contact with each surface of each of the plates, and the plates are laminated so that the heat transfer tubes on one of adjacent plates intersect with the heat transfer tubes on the other of the adjacent plates.
    Type: Application
    Filed: August 13, 2002
    Publication date: March 20, 2003
    Inventors: Hitoshi Matsushima, Mari Uchida, Mitsugu Aoyama
  • Heat source apparatus of ice storage type
    Patent number: 6389827
    Abstract: A heat source apparatus of the ice storage type for performing a cold storage operation and an air-conditioning operation utilizing the stored cold, includes a heat source unit, a cold storage tank connected to the heat source unit, a water level sensor for measuring the stored cold amount by detecting the water level in the cold storage tank, and an operation panel having a menu screen for setting the starting and ending time of the cold storage operation and the air-conditioning operation, wherein the setting of the starting and ending time of the air-conditioning operation can be canceled and a predetermined stored cold amount can be set on the operation panel.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: May 21, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masanori Agekura, Mitsugu Aoyama, Kenji Takagi, Ken Kaneko, Akira Mishima
  • Heat source apparatus of ice storage type
    Publication number: 20010013230
    Abstract: A heat source apparatus of ice storage type for performing the cool storage operation and the air-conditioning operation utilizing the stored cool, includes a heat source unit, a cool storage tank connected to the heat source unit, a water level sensor for measuring the stored cool amount by detecting the water level in the cool storage tank, and an operation panel having a menu screen for setting the starting and ending time of the cool storage operation and the air-conditioning operation, wherein the setting of the starting and ending time of the air-conditioning operation can be canceled and a predetermined stored cool amount can be set on the operation panel.
    Type: Application
    Filed: December 29, 2000
    Publication date: August 16, 2001
    Inventors: Masanori Agekura, Mitsugu Aoyama, Kenji Takagi, Ken Kaneko, Akira Mishima