Patents by Inventor Jiro Yuzawa

Jiro Yuzawa 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).

  • Nonhazardous and environmentally nondestructive refrigerant composition
    Patent number: 5254279
    Abstract: A refrigerant composition consisting essentially of chlorodifluoromethane, 1-chloro-1, 1-difluoroethane and octafluoropropane, said composition, while preventing the bad influence on ozone layer and maintaining the environment of working place in a nonhazardous condition, can be used as a substitute for R500 or R502 owing to the obtainability of the desired refrigerating capacity and a good return of oil.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: October 19, 1993
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazuo Takemasa, Yutaka Ohmori, Jiro Yuzawa