Patents by Inventor Mark Clark Cesa

Mark Clark Cesa 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).

  • Purification of acetonitrile by a distillative recovery/ion exchange resin treatment process
    Patent number: 7491838
    Abstract: A process of producing HPLC grade acetonitrile (UV cutoff<190) comprising a multistep distillation under reflux conditions followed by acidic ion exchange resin treatment to remove essentially all impurities from the acetonitrile.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: February 17, 2009
    Assignee: INEOS USA LLC
    Inventors: Mark Clark Cesa, Paul Alan Jacobson, Richard Lee Wappelhorst
  • Purification of acetonitrile by a distillative recovery/ion exchange resin treatment process
    Publication number: 20040176631
    Abstract: A process of producing HPLC grade acetonitrile (UV cutoff<190) comprising a multistep distillation under reflux conditions followed by acidic ion exchange resin treatment to remove essentially all impurities from the acetonitrile.
    Type: Application
    Filed: August 26, 2003
    Publication date: September 9, 2004
    Inventors: Mark Clark Cesa, Paul Alan Jacobson, Richard Lee Wappelhorst
  • Oxidation and ammoxidation of acrylonitrile process waste water organics
    Patent number: 6238574
    Abstract: A process for upgrading aqueous acrylonitrile waste streams containing organic material comprising atomizing an acrylonitrile waste water stream containing organic material, introducing the atomized acrylonitrile waste water stream at a temperature below the decomposition temperature of the organics present in the waste water stream, into a reaction zone containing a catalyst and at least one reactant gas, reacting the atomized waste water stream and reactant gas in the presence of the catalyst to convert at least some of the organics in the waste water stream into at least one compound selected from the group consisting of acetonitrile, hydrogen cyanide and acrylonitrile.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: May 29, 2001
    Assignee: The Standard Oil Company
    Inventors: Mark Clark Cesa, Anne Marie Graham, Albert Richard Shuki