Patents by Inventor Charles Henry Johnson

Charles Henry Johnson 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).

  • Recovery of olefin monomers
    Patent number: 6706857
    Abstract: In a process for the production of a polyolefin, an olefin monomer is polymerised said polyolefin and residual monomer is recovered. A gas stream comprising the monomer and nitrogen is subjected to a PSA process in which said monomer is adsorbed on a periodically regenerated silica gel or alumina adsorbent to recover a purified gas stream containing said olefin and a nitrogen rich stream containing no less than 99% nitrogen and containing no less than 50% of the nitrogen content of the gas feed to the PSA process.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: March 16, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Jr., Charles Henry Johnson
  • Recovery of olefin monomers
    Publication number: 20030176634
    Abstract: In a process for the production of a polyolefin, an olefin monomer is polymerised said polyolefin and residual monomer is recovered. A gas stream comprising the monomer and nitrogen is subjected to a PSA process in which said monomer is adsorbed on a periodically regenerated silica gel or alumina adsorbent to recover a purified gas stream containing said olefin and a nitrogen rich stream containing no less than 99% nitrogen and containing no less than 50% of the nitrogen content of the gas feed to the PSA process.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Charles Henry Johnson
  • RECOVERY OF OLEFIN MONOMERS
    Publication number: 20030073788
    Abstract: In a process for the production of a polyolefin, an olefin monomer is polymerised said polyolefin and residual monomer is recovered. A gas stream comprising the monomer and nitrogen is subjected to a PSA process in which said monomer is adsorbed on a periodically regenerated silica gel or alumina adsorbent to recover a purified gas stream containing said olefin and a nitrogen rich stream containing no less than 99% nitrogen and containing no less than 50% of the nitrogen content of the gas feed to the PSA process.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventors: Timothy Christopher Golden, Edward Landis Weist, Charles Henry Johnson
  • Adjusted density carbon for hydrogen PSA
    Patent number: 6027549
    Abstract: The present invention is a process for adsorbing carbon dioxide from a carbon dioxide containing gas mixture comprising contacting the gas mixture with an activated carbon adsorbent having a density in the range of approximately 0.56 to 0.61 g/cc (35 to 38 lbs./ft.sup.3) and adsorbing the carbon dioxide on the activated carbon adsorbent.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: February 22, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Thomas Stephen Farris, Wilbur Clymer Kratz, William Emil Waldron, Charles Henry Johnson