Patents by Inventor Tetuya Masuda

Tetuya Masuda 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).

  • Mixed refrigerant injection method
    Patent number: 5970721
    Abstract: In a method and an apparatus for injecting mixed refrigerant into a refrigerant circuit comprising at least a compressor, a condenser, an expansion device and an evaporator which are connected to one another through a refrigerant pipe, the mixed refrigerant is intermittently injected from a refrigerant bomb at a predetermined position of a low pressure side of the refrigerant circuit while keeping the mixed refrigerant in a liquid state. The intermittent injection operation (amount) of the liquid refrigerant into the refrigerant circuit may be controlled on the basis of the degree of superheat of the mixed refrigerant in the refrigerant circuit.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: October 26, 1999
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ichiro Kamimura, Norio Sawada, Kouji Satou, Tetuya Masuda