Patents by Inventor Edward R. Murphy

Edward R. Murphy 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).

  • Polytrimethylene ether glycol or copolymers thereof having improved color and processes for their preparation
    Patent number: 8598391
    Abstract: Processes for reducing the color of polytrimethylene ether glycol or copolymers thereof are provided. The processes include polycondensing diols in the presence of an acid catalyst and adding base continuously over a period of the polycondensation reaction. The invention also relates to the polytrimethylene ether glycol thereof produced by these processes.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: December 3, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Aaron Minter, Edward R. Murphy, Howard C. Ng, Rupert Spence, Tuyu Xie
  • Processes for producing polytrimethylene ether glycol and copolymers thereof
    Patent number: 8344098
    Abstract: Processes for producing polytrimethylene ether glycol and copolymers thereof are provided wherein, by condensing and recycling at least a portion of the vapor phase produced as the reaction progresses, the yield loss and polymer color are reduced.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: January 1, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Christian Hoffmann, Scott Christopher Jackson, Edward R. Murphy, Bhuma Rajagopalan
  • Process for the preparation of polyalkylene ether glycol
    Patent number: 8247526
    Abstract: Polyalkylene ether glycol or copolymer thereof are prepared by contacting at least one alkanediol with a alkanediol containing cyclic sulfate.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 21, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Aaron Minter, Edward R. Murphy, James M. Tocyloski
  • PROCESS FOR THE PREPARATION OF POLYALKYLENE ETHER GLYCOL
    Publication number: 20120157657
    Abstract: Polyalkylene ether glycol or copolymer thereof are prepared by contacting at least one alkanediol with a alkanediol containing cyclic sulfate.
    Type: Application
    Filed: December 20, 2010
    Publication date: June 21, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Aaron Minter, Edward R. Murphy, James M. Tocyloski
  • Preparation of polytrimethylene ether glycol or copolymers thereof
    Patent number: 8143371
    Abstract: This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof having a number-average molecular weight of at least about 250 g/mole by a polycondensation reaction using at least one acid catalyst.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: March 27, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Christian Hoffmann, Scott Christopher Jackson, Edward R. Murphy, Rupert Spence
  • TEMPERATURE ADJUSTMENT DEVICE
    Publication number: 20120017613
    Abstract: This invention relates to a temperature adjustment device that executes an absorption cooling or heating cycle in which a lithium halide, typically a lithium bromide, absorbent is used.
    Type: Application
    Filed: March 31, 2010
    Publication date: January 26, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Thomas Foo, Edward R. Murphy, Dennis A. Redder, Mark A. Scialdone, Mark Brandon Shiflett
  • TEMPERATURE ADJUSTMENT DEVICE
    Publication number: 20120012779
    Abstract: This invention relates to a temperature adjustment device that executes an absorption cooling or heating cycle in which a lithium halide, typically a lithium bromide, absorbent is used.
    Type: Application
    Filed: March 31, 2010
    Publication date: January 19, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Thomas Foo, Edward R. Murphy, Dennis A. Redder, Mark A. Scialdone, Mark Brandon Shiflett
  • PROCESSES FOR PRODUCING POLYTRIMETHYLENE ETHER GLYCOL AND COPOLYMERS THEREOF
    Publication number: 20110152498
    Abstract: Processes for producing polytrimethylene ether glycol and copolymers thereof are provided wherein, by condensing and recycling at least a portion of the vapor phase produced as the reaction progresses, the yield loss and polymer color are reduced.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 23, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Christian Hoffmann, Scott Christopher Jackson, Edward R. Murphy, Bhuma Rajagopalan
  • POLYTRIMETHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF HAVING IMPROVED COLOR AND PROCESSES FOR THEIR PREPARATION
    Publication number: 20110077433
    Abstract: Processes for reducing the color of polytrimethylene ether glycol or copolymers thereof are provided. The processes include polycondensing diols in the presence of an acid catalyst and adding base continuously over a period of the polycondensation reaction. The invention also relates to the polytrimethylene ether glycol thereof produced by these processes.
    Type: Application
    Filed: September 29, 2010
    Publication date: March 31, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Aaron Minter, Edward R. Murphy, Howard C. Ng, Rupert Spence, Tuyu Xie
  • PREPARATION OF POLYTRIMETHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF
    Publication number: 20090118464
    Abstract: This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof having a number-average molecular weight of at least about 250 g/mole by a polycondensation reaction using at least one acid catalyst.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 7, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Mark Andrew Harmer, Christian Hoffmann, Scott Christopher Jackson, Edward R. Murphy, Rupert Spence
  • Folding support for a carpet cleaning wand
    Patent number: 4472855
    Abstract: An upper mounting portion of a support stand is connected to a carpet cleaning wand between two handles. A lower support leg of the stand is pivotally movable between an in-use position and a stowed position. In its in-use position the lower support leg is in affect an endwise extension of the mount and together with the inlet end of the wand forms a three point support, supporting the wand in an elevated attitude closely approximating the wands in-use attitude. A single spring serves to bias the support leg in both its in-use position and its stowed position.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: September 25, 1984
    Inventors: Edward R. Murphy, Lew E. Plummer