Patents by Inventor Nobutaka Miyoshi

Nobutaka Miyoshi 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-effect absorption refrigerating machine
    Patent number: 4551991
    Abstract: The present invention is provided with an evaporator, a primary absorber, a plurality of generators, a condenser and a direct contact type heat exchanger which is provided with auxiliary evaporator-absorber stages in a plural set. These evaporator-absorber stages in a plural set are divided into a plurality of groups and connected so that a solution is sent from the final absorber stage of each group into each generator. By this construction, the solution in a first generator of a plurality of generators can be made to work at a lower level of temperature than usual.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: November 12, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Nobutaka Miyoshi, Shigeo Sugimoto, Michihiko Aizawa