Patents by Inventor Miyoko Hiramoto

Miyoko Hiramoto 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).

  • Refrigerant
    Patent number: 5261241
    Abstract: A refrigerant containing two or more constituent components that exhibit an endothermic action when mixed with each other, the refrigerant including, as the constituent components, an inorganic salt and a salt hydrate containing at least a hydrate of strontium hydroxide. The refrigerant has a superior cooling capability such as a low attainable cooling temperature and a long duration of the cooled state, and also has no fear of melting or deterioration even where the atmospheric temperature is increased during storage.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: November 16, 1993
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Koichi Kitahara, Yoshiki Matsumoto, Masayuki Fujisawa, Isao Nagatsu, Miyoko Hiramoto, Shigeo Ariki