Patents Assigned to Protocol Resource Management Inc.
  • Patent number: 6669862
    Abstract: A refrigerant composition comprises a mixture of three HFC (hydrofluorocarbons) refrigerants, namely, HFC 32, HFC 125 and HFC 134a. A lower alkyl alcohol such as ethanol is included in the mixture to improve miscibility in commonly-used lubricants such as mineral oil by altering the viscosity of the entrained oil within the operating air-conditioning system. Optionally, a fifth component made be added, namely a hydrocarbon based refrigerant such as iso-butane or propane, to further improve characteristics of refrigerant. The resulting refrigerant is similar in characteristics to R22, and is compatible with existing air-conditioning and refrigeration devices originally for use with R22 refrigerant without system modifications.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 30, 2003
    Assignee: Protocol Resource Management Inc.
    Inventor: James W. Flowers