Patents by Inventor Richard Barchas

Richard Barchas 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).

  • Chemical absorption process for recovering olefins from cracked gases
    Patent number: 6395952
    Abstract: The present invention provides a method for recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: May 28, 2002
    Assignee: Stone & Webster Process Technology, Inc.
    Inventor: Richard Barchas
  • Deep selective hydrogenation process
    Patent number: 6297414
    Abstract: The present invention provides an improved method for deep selective hydrogenation for use in recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: October 2, 2001
    Assignee: Stone & Webster Process Technology, Inc.
    Inventors: Richard Barchas, Peter Bell
  • Chemical absorption process for recovering olefins from cracked gases
    Patent number: 5859304
    Abstract: The present invention provides an improved method for recovering high purity olefins from cracked gas effluents or other parafin/olefin gaseous mixtures by use of a chemical absorption process.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: January 12, 1999
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Richard Barchas, Richard McCue, Jr., Christopher Wallsgrove, Mark Whitney