Patents by Inventor Suk J. Oho

Suk J. Oho 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).

  • Non-azerotropic refrigerant composition
    Patent number: 5422025
    Abstract: A refrigerant composition for use in vapor compressing type freezer and the like is disclosed for substituting the refrigerant of CFC series which destroys the ozonic layer. The refrigerant composition of the present invention includes: 65 weight % of liquified nitrogen, 15-20 weight % of propylene glycol, 8 weight % of ethylene glycol, 2 weight % of an aqueous solution of sodium chloride, and 10-5 weight % of a surfactant. The refrigerant composition of the present invention gives a solution to the problem of the destruction of the ozonic layer.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: June 6, 1995
    Assignees: Yohachi Senba, Eiichi Sato
    Inventor: Suk J. Oho