Patents by Inventor Kunio Hirao

Kunio Hirao 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).

  • Composition for absorption refrigeration
    Patent number: 4557850
    Abstract: A composition for absorption refrigeration which comprises a fluorinated hydrocarbon refrigerant, an amide or glycol ether solvent serving as an absorption liquid, and a phosphite stabilizer. The stabilizer is used in an amount of 0.05 to 0.5 wt % of the absorption liquid calculated as phosphorus, within which range the phosphite stabilizer can suitably protect the refrigerant and the absorption liquid from deteriorating and decomposing at high operation temperatures.
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: December 10, 1985
    Assignee: Matsushita Electric Industrial Company, Limited
    Inventors: Eiji Ando, Yoshiki Goto, Kumiko Moriyama, Isao Takeshita, Kunio Hirao