Patents by Inventor Richard P. Freeman

Richard P. Freeman 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).

  • Process for the recovery of C.sub.2 + or C.sub.3 + hydrocarbons
    Patent number: 5287703
    Abstract: A process for cooling, phase separating, rectifying and stripping a hydrocarbon containing feed gas stream to recover a heavy hydrocarbon product wherein a predominant amount of the refrigeration for the process is provided from a single loop vapor recompression refrigerator employing a mixed refrigerant.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: February 22, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Dennis P. Bernhard, Michael H. Evans, Richard P. Freeman, Howard C. Rowles