Patents by Inventor John P. Cartwright

John P. Cartwright 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 recovery and recycling assembly
    Patent number: 5167126
    Abstract: An apparatus for recovering and recycling used refrigerants from automotive air conditioning systems and similar air conditioning systems is disclosed having a unique cleaning assembly, a unique coolable storage means, and for recharging recycled refrigerant a unique metering means, as well as gauge assembly for measuring the amount of gas contaminates in the used refrigerants.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: December 1, 1992
    Assignee: CJS Enterprises, Inc.
    Inventor: John P. Cartwright