Patents by Inventor Robert E. Trotter

Robert E. Trotter 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 biologically-produced 1,3-propanediol
    Patent number: 8183417
    Abstract: A process for purifying 1,3-propanediol from the fermentation broth of a cultured E. coli that has been bioengineered to synthesize 1,3-propanediol from sugar is provided. The basic process entails filtration, ion exchange and distillation of the fermentation broth product stream, preferably including chemical reduction of the product during the distillation procedure. Also provided are highly purified compositions of 1,3-propanediol.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: May 22, 2012
    Assignees: E. I. du Pont de Nemours and Company, Tate & Lyle Ingredients Americas LLC
    Inventors: Dennis N. Adkesson, Albert W. Alsop, Tyler T. Ames, Luis A. Chu, James M. Disney, Bryan C. Dravis, Patrick Fitzgibbon, James M. Gaddy, F. Glenn Gallagher, William F. Lehnhardt, Jefferson C. Lievense, Michael L. Luyben, Mayis Seapan, Robert E. Trotter, Gregory M. Wenndt, Eugene K. Yu
  • Purification Of Biologically-Produced 1,3-Propanediol
    Publication number: 20110152581
    Abstract: A process for purifying 1,3-propanediol from the fermentation broth of a cultured E. coil that has been bioengineered to synthesize 1,3-propanediol from sugar is provided. The basic process entails filtration, ion exchange and distillation of the fermentation broth product stream, preferably including chemical reduction of the product during the distillation procedure. Also provided are highly purified compositions of 1,3-propanediol.
    Type: Application
    Filed: February 25, 2011
    Publication date: June 23, 2011
    Inventors: Dennis Michael ADKESSON, Albert W. Alsop, Tyler T. Ames, Luis Alberto Chu, James M. Disney, Bryan C. Dravis, Patrick Fitzgibbon, James M. Gaddy, F. Glenn Gallagher, William F. Lehnhardt, Jefferson C. Lievense, Michael L. Luyben, Mayis Seapan, Robert E. Trotter, Gregory M. Wenndt, Eugene K. Yu
  • Purification Of Biologically-Produced 1,3-Propanediol
    Publication number: 20110152583
    Abstract: A process for purifying 1,3-propanediol from the fermentation broth of a cultured E. coli that has been bioengineered to synthesize 1,3-propanediol from sugar is provided. The basic process entails filtration, ion exchange and distillation of the fermentation broth product stream, preferably including chemical reduction of the product during the distillation procedure. Also provided are highly purified compositions of 1,3-propanediol.
    Type: Application
    Filed: February 25, 2011
    Publication date: June 23, 2011
    Inventors: Dennis Michael Adkesson, Albert W. Alsop, Tyler T. Ames, Luis Alberto Chu, James M. Disney, Bryan C. Dravis, Patrick Fitzgibbon, James M. Gaddy, F. Glenn Gallagher, William F. Lehnhardt, Jefferson C. Lievense, Michael L. Luyben, Mayis Seapan, Robert E. Trotter, Gregory M. Wenndt, Eugene K. Yu
  • Purification of biologically-produced 1,3-propanediol
    Patent number: 7919658
    Abstract: A process for purifying 1,3-propanediol from the fermentation broth of a cultured E. coli that has been bioengineered to synthesize 1,3-propanediol from sugar is provided. The basic process entails filtration, ion exchange and distillation of the fermentation broth product stream, preferably including chemical reduction of the product during the distillation procedure. Also provided are highly purified compositions of 1,3-propanediol.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: April 5, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Dennis M. Adkesson, James S. Disney, Bryan C. Dravis, James M. Gaddy, William F. Lehnhardt, Jefferson C. Lievense, Gregory M. Wenndt, Tyler T. Ames, Patrick Fitzgibbon, F. Glenn Gallagher, Michael L. Luyben, Mayis Seapan, Robert E. Trotter, Albert W. Alsop, Eugene K. Yu, Luis Alberto Chu
  • Continuous process for producing poly(trimethylene terephthalate)
    Patent number: 7531617
    Abstract: This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by product resulting from the process is condensed in a condenser, and a portion of the condensed by-product is recycled back into the process.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: May 12, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Harvey Eng, Emily A. Blum, Daniel Albert Green, Carl J. Giardino, Gene Parrish, Robert E. Trotter, Gary J. Wilson
  • Continuous manufacture of poly(trimethylene terephthalate)
    Patent number: 7524921
    Abstract: This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by-product resulting from the process is condensed in a condenser, the total amount of any trimethylene terephthalate cyclic dimer and poly(trimethylene terephthalate) in the condensed by-product 1,3-propanediol is adjusted, and a portion of the condensed by-product is recycled to the condenser while another portion is recycled back into the process.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 28, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Harvey Eng, Emily A. Blum, Daniel Albert Green, Carl J. Giardino, Gene Parrish, Robert E. Trotter, Gary J. Wilson
  • Poly(trimethylene therephthalate) continuous manufacturing process
    Patent number: 7504474
    Abstract: This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by product resulting from the process is condensed in a condenser, and a portion of the condensed by-product is recycled to the condenser while anther portion is recycled back into the process.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: March 17, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Harvey Eng, Emily A. Blum, Daniel Albert Green, Gene Parrish, Robert E. Trotter, Gary J. Wilson
  • Purification of biochemically derived 1,3-propanediol
    Patent number: 7211699
    Abstract: The invention discloses a hydrogenation process for removing impurities and controlling acid for use in downstream processing of biochemically-derived 1,3-propanediol. Preferably, the biochemically-derived 1,3-propanediol, before the contacting, has an initial color and, after the contracting, has a color that is lower than the initial color.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: May 1, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mayis Seapan, George F. Diffendall, Robert E. Trotter, Tyler T. Ames, F. Glenn Gallagher
  • Hydrogenation of biochemical derived 1,3 -propanediol
    Patent number: 7098368
    Abstract: The invention discloses a hydrogenation process for removing impurities and controlling acid for use in downstream processing of biochemically-derived 1,3-propanediol. Preferably, the biochemically-derived 1,3-propanediol, before the contacting, has an initial color and, after the contracting, has a color that is lower than the initial color.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: August 29, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mayis Seapan, George F. Diffendall, Robert E. Trotter, Tyler T. Ames, F. Glenn Gallagher
  • Hydrogenation of biochemical derived 1,3 -propanediol
    Publication number: 20040260125
    Abstract: The invention discloses a hydrogenation process for removing impurities and controlling acid for use in downstream processing of biochemically-derived 1,3-propanediol. Preferably, the biochemically-derived 1,3-propanediol, before the contacting, has an initial color and, after the contracting, has a color that is lower than the initial color.
    Type: Application
    Filed: May 5, 2004
    Publication date: December 23, 2004
    Inventors: Mayis Seapan, George F. Diffendall, Robert E. Trotter, Tyler T. Ames, F. Glenn Gallagher
  • Process for the separation of glycols from dimethyl terephthalate
    Patent number: 5391263
    Abstract: Separation of ethylene glycol and diethylene glycol from dimethyl terephthalate is accomplished by distillation using methyl benzoate or the methyl ester of p-toluic acid as an azeotropic agent.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: February 21, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard R. Hepner, Robert E. Michel, Robert E. Trotter
  • Preparation of purified concentrated BDO
    Patent number: 5209825
    Abstract: A distillation process for the preparation of purified concentrated BDO.High boiling impurities, including color formers, precursors of color formers and tar formers are removed from the BDO early in the process and under mild conditions.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hashim M. Badat, Peter G. Gelblum, Robert E. Trotter