Patents by Inventor Tadayuki Urushihata

Tadayuki Urushihata 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).

  • Multi-airconditioner
    Patent number: 5279131
    Abstract: Disclosed is a multi-airconditioner including a plurality of outdoor units and at least one indoor units in which refrigerant conduits connecting the outdoor units and the at least one indoor units are united in the form of two or three conduits. In the case of the multi-airconditioner for effecting either room-cooling or room-heating, each of the outdoor units and each of the indoor units have a liquefied refrigerant conduit and a gasified refrigerant conduit, which are connected with a single common liquefied refrigerant conduit and a single common gasified refrigerant conduit, respectively.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: January 18, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Tadayuki Urushihata, Fumio Harada, Kenji Tokusa, Toshiyuki Hojo, Keij Tanaka, Kensaku Oguni