Patents by Inventor Charles P. McKenna

Charles P. McKenna 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 gas composition
    Patent number: 9200189
    Abstract: Present invention relates to a refrigerant composition comprising tetrafluorethane, difluoromethane and pentafluoroethane for use in heating and cooling applications, especially for inverter air-conditioners/heat pumps.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: December 1, 2015
    Assignee: ECO D'GAS AS
    Inventor: Charles P. McKenna
  • REFRIGERANT GAS COMPOSITION
    Publication number: 20150144833
    Abstract: Present invention relates to a refrigerant composition comprising tetrafluorethane, difluoromethane and pentafluoroethane for use in heating and cooling applications, especially for inverter air-conditioners/heat pumps.
    Type: Application
    Filed: May 8, 2013
    Publication date: May 28, 2015
    Inventor: Charles P. McKenna