Patents by Inventor Joseph P. Bridges

Joseph P. Bridges 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).

  • Fractional extraction of butadiene
    Patent number: 8222474
    Abstract: A method for the solvent extraction of 1,3-butadiene from a mixture of C4 hydrocarbons that employs a distillation tower to produce the desired 1,3-butadiene product as an overhead and a separate bottoms stream that is removed from and not recycled in the solvent extraction process.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: July 17, 2012
    Assignee: Equistar Chemicals, L.P.
    Inventors: Joseph P. Bridges, Allen David Hood, Jr., Scott A. Smith, Solon B. Williams
  • Fractional extraction of butadiene
    Publication number: 20100298621
    Abstract: A method for the solvent extraction of 1,3-butadiene from a mixture of C4 hydrocarbons that employs a distillation tower to produce the desired 1,3-butadiene product as an overhead and a separate bottoms stream that is removed from and not recycled in the solvent extraction process.
    Type: Application
    Filed: May 22, 2009
    Publication date: November 25, 2010
    Inventors: Joseph P. Bridges, Allen David Hood, JR., Scott A. Smith, Solon B. Williams
  • Extractive distillation
    Patent number: 7718841
    Abstract: A method for reducing corrosion in a diolefin extractive distillation process comprising preventing the formation of ammonium carbonate by promoting the formation of a carbonate salt that does not dissociate in the ammonium carbonate dissociation temperature range of that extractive distillation process.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: May 18, 2010
    Assignee: Equistar Chemicals, LP
    Inventors: Joseph P. Bridges, Robert J. Haynal, Allen David Hood, Jr., Solon B. Williams
  • Extractive distillation
    Publication number: 20090306450
    Abstract: A method for reducing corrosion in a diolefin extractive distillation process comprising preventing the formation of ammonium carbonate by promoting the formation of a carbonate salt that does not dissociate in the ammonium carbonate dissociation temperature range of that extractive distillation process.
    Type: Application
    Filed: June 9, 2008
    Publication date: December 10, 2009
    Inventors: Joseph P. Bridges, Robert J. Haynal, Allen David Hood, JR., Solon B. Williams
  • Solvent extraction
    Patent number: 7348466
    Abstract: In a method for the solvent extraction of butadiene from a mixture of hydrocarbons having four carbon atoms per molecule, which method inherently produces tars, the extraction process is operated with a tar loading level, relative to the solvent employed, of no more than about 1.6 wt. %.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: March 25, 2008
    Assignee: Equistar Chemicals, LP
    Inventors: Joseph P. Bridges, Solon B. Williams, Byron B. Unterbrink
  • Isocyanate residue purification
    Patent number: 5962728
    Abstract: The present invention relates to a process for isolating aliphatic isocyanate monomer(s) from a liquid or viscous paste composition comprising polymeric isocyanate residues and the aliphatic isocyanate monomer(s), and for isolating solid polymeric isocyanate residue from said composition. Also disclosed is the aliphatic isocyanate monomer(s) and the solid polymeric isocyanate byproduct produced by this process.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: October 5, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Robert W. Mason, Farhad Fadakar, Joseph P. Bridges, Larry K. Butler, Majid Keyvani