Patents by Inventor James Assef

James Assef 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).

  • Upgrading a C5 olefin stream
    Patent number: 10836691
    Abstract: A process is provided including subjecting a raw C5 stream containing C5 diolefins to extractive distillation to form C5 diolefins and a raffinate stream. The process includes subjecting the raffinate stream to dehydrogenation to form additional C5 diolefins, which are recycled to the extractive distillation. Another process includes modifying a C5 diolefin extractive distillation unit by forming a recycle loop with a C5 olefin dehydrogenation reactor. A system is provided that includes a C5 diolefin extractive distillation unit and a C5 olefin dehydrogenation reactor that are arranged in a recycle loop. A process is provided that includes subjecting a raffinate stream containing C5 olefins from an extractive distillation unit to dehydrogenation to form C5 diolefins.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: November 17, 2020
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: James Assef, Scott Cooper, Kaushik Gandhi
  • Depolymerization of plastic materials
    Patent number: 9650313
    Abstract: A styrene monomer reclamation process and system is described. The styrene monomer reclamation process includes providing a waste plastic. The waste plastic includes styrenic polymers. The waste plastic is formed into polymer particles. At least a portion of the polymer particles are dissolved in a solvent to form a polymer stream. The dissolved polymer particles are depolymerized to form a styrene monomer stream.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: May 16, 2017
    Assignee: Fina Technology, Inc.
    Inventors: Jon Tippet, James Butler, James Assef, John Ashbaugh, Jason Clark, Michel Duc, Jean-Bernard Cary
  • UPGRADING A C5 OLEFIN STREAM
    Publication number: 20170081260
    Abstract: A process is provided including subjecting a raw C5 stream containing C5 diolefins to extractive distillation to form C5 diolefins and a raffinate stream. The process includes subjecting the raffinate stream to dehydrogenation to form additional C5 diolefins, which are recycled to the extractive distillation. Another process includes modifying a C5 diolefin extractive distillation unit by forming a recycle loop with a C5 olefin dehydrogenation reactor. A system is provided that includes a C5 diolefin extractive distillation unit and a C5 olefin dehydrogenation reactor that are arranged in a recycle loop. A process is provided that includes subjecting a raffinate stream containing C5 olefins from an extractive distillation unit to dehydrogenation to form C5 diolefins.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 23, 2017
    Inventors: James Assef, Scott Cooper, Kaushik Gandhi
  • Depolymerization of Plastic Materials
    Publication number: 20150210611
    Abstract: A styrene monomer reclamation process and system is described. The styrene monomer reclamation process includes providing a waste plastic. The waste plastic includes styrenic polymers. The waste plastic is formed into polymer particles. At least a portion of the polymer particles are dissolved in a solvent to form a polymer stream. The dissolved polymer particles are depolymerized to form a styrene monomer stream.
    Type: Application
    Filed: December 30, 2014
    Publication date: July 30, 2015
    Inventors: Jon Tippet, James Butler, James Assef, John Ashbaugh, Jason Clark, Michel Duc, Jean-Bernard Cary
  • Depolymerizatin of plastic materials
    Patent number: 8969638
    Abstract: A styrene monomer reclamation process and system is described. The styrene monomer reclamation process includes providing a waste plastic. The waste plastic includes styrenic polymers. The waste plastic is formed into polymer particles. At least a portion of the polymer particles are dissolved in a solvent to form a polymer stream. The dissolved polymer particles are depolymerized to form a styrene monomer stream.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: March 3, 2015
    Assignee: Fina Technology, Inc.
    Inventors: Jon Tippet, James R. Butler, James Assef, John Ashbaugh, Jason Clark, Michel Duc, Jean-Bernard Cary
  • Depolymerizatin of Plastic Materials
    Publication number: 20120108863
    Abstract: A styrene monomer reclamation process and system is disclosed. The styrene monomer reclamation process includes providing a waste plastic. The waste plastic includes styrenic polymers. The waste plastic is formed into polymer particles. At least a portion of the polymer particles are dissolved in a solvent to form a polymer stream. The dissolved polymer particles are depolymerized to form a styrene monomer stream.
    Type: Application
    Filed: September 28, 2011
    Publication date: May 3, 2012
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Jon Tippet, James R. Butler, James Assef, John Ashbaugh, Jason Clark, Michel Duc, Jean-Bernard Cary