Patents by Inventor Gene Parrish

Gene Parrish 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).

  • 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
  • Poly(trimethylene therephthalate) continuous manufacturing process
    Publication number: 20070249857
    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: Application
    Filed: December 14, 2006
    Publication date: October 25, 2007
    Inventors: John Eng, Emily Blum, Daniel Green, Gene Parrish, Robert Trotter, Gary Wilson
  • Continuous manufacture of poly(trimethylene terephthalate)
    Publication number: 20070191581
    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: Application
    Filed: December 14, 2006
    Publication date: August 16, 2007
    Inventors: John Eng, Emily Blum, Daniel Green, Carl Giardino, Gene Parrish, Robert Trotter, Gary Wilson
  • Continuous process for producing poly(trimethylene terephthalate)
    Publication number: 20070191580
    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: Application
    Filed: December 14, 2006
    Publication date: August 16, 2007
    Inventors: John Eng, Emily Blum, Daniel Green, Carl Giardino, Gene Parrish, Robert Trotter, Gary Wilson