Patents by Inventor Mark A. Casey

Mark A. Casey 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).

  • High efficiency refrigerant recovery system
    Patent number: 5209074
    Abstract: The invention is directed to a process and apparatus for recovering refrigerant from a refrigeration purge stream wherein a gaseous purge stream containing a refrigerant and non-condensible gasses is countercurrently contacted with a high boiling point liquid which absorbs the refrigerant from the purge stream. Preferably a scrubbing column is used to effect countercurrent contact between the purge stream and the liquid stream.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Donald E. McConnell, William E. Holland, Mark A. Casey