Patents by Inventor Paul E. Swanson

Paul E. Swanson 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 VOLATILE PRODUCTS FROM FERMENTATION BROTH
    Publication number: 20100099155
    Abstract: Provided are apparatuses and processes for the removal and purification of fermentation prepared one or more volatile organic compounds. The apparatuses comprise a fermentor unit, a vacuum side stripper unit (10), and, optionally, one or more of a pressure-swing adsorption unit, a dual-function column, a dividing wall distillation column unit, and a means for inducing phase separation of a mixture of a volatile organic compound and water.
    Type: Application
    Filed: December 12, 2007
    Publication date: April 22, 2010
    Inventors: Timothy C. Frank, Jeff A. Ferrio, Paul E. Swanson, Juergen Lueske
  • Method for immobilizing a biologic in a polyurethane-hydrogel composition, a composition prepared from the method, and biomedical applications
    Publication number: 20030134294
    Abstract: A biologic can be immobilized in a transparent polyurethane-hydrogel composition. Such a polyurethane-hydrogel composition can be prepared from forming a polyurethane-hydrogel mixture and immobilizing a biologic in the mixture. The mixture can be formed by admixing a prepolymer and a water-soluble crosslinker in aqueous solvent and in the substantial absence of organic solvent. A suitable prepolymer generally includes at least one water-soluble polyol and at least one isocyanate and can be added to the mixture in an amount of no greater than about 5 weight percent based on total weight of all components. A suitable crosslinker generally has a crosslinker functionality of at least 2. A biologic includes cells, peptides, nucleics, peptide nucleic acids, saccharides, lipopolysaccharides, glycolipids, and combinations of these. A polyurethane-hydrogel composition having an immobilized biologic can be particularly useful for biomedical applications.
    Type: Application
    Filed: May 21, 2002
    Publication date: July 17, 2003
    Inventors: Andrew F. Sandford, Venkiteswaran Subramanian, Jeffrey R. Allen, Paul E. Swanson, Joey W. Storer, Deepak K. Sharma
  • Hydroxyfunctional thermoplastic polyesters
    Patent number: 5496910
    Abstract: A biodegradable hydroxy-functional polyester is prepared by contacting a hydroxy-functional aliphatic dicarboxylic acid or a mixture of dicarboxylic acids containing hydroxy-functional aliphatic diacids, with a diglycidyl ether or diglycidyl ester in the presence of an onium catalyst in an ether solvent under conditions suitable for forming the polyester.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: March 5, 1996
    Assignee: The Dow Chemical Company
    Inventors: Michael N. Mang, Jerry E. White, Paul E. Swanson
  • Method for conversion of halogenated hydrocarbons to halohydrins
    Patent number: 5372944
    Abstract: A process for converting halogenated aliphatic hydrocarbons to halohydrins using a microorganism selected from Rhodococcus species ATCC 55388 and mutants thereof are described.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: December 13, 1994
    Assignee: The Dow Chemical Company
    Inventor: Paul E. Swanson
  • Extraction of thymidine and other nucleosides
    Patent number: 5204245
    Abstract: An enzymatic process for extracting a nucleoside, such as thymidine, from a biomass without substantial thymine production.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: April 20, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: James A. Doncheck, James R. Millis, Paul E. Swanson