Patents by Inventor Donald James Arthur

Donald James Arthur 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).

  • High-molecular weight polymers and methods of manufacture
    Publication number: 20040217582
    Abstract: A composition comprises a solid-stated block copolymer of an aromatic polyester and a caprolactone, wherein the copolymer has been solid state polymerized such that intrinsic viscosity increases at least 20%, the caprolactone content decreases no more than 1.2% absolute and the transesterification increases no more than 3.5% absolute, and wherein the solid-stated copolymer has an intrinsic viscosity of at least 0.82. Particularly preferred chain extension reactions are performed at a temperature of less than 175° C., and even more preferably at less than 165° C. In further aspects of the inventive subject matter, yarns and methods of producing a fiber include contemplated solid-stated block copolymers.
    Type: Application
    Filed: June 7, 2004
    Publication date: November 4, 2004
    Inventors: Srinivasan Sridharan, John Armstrong Young, Donald James Arthur, Thomas Yiu-Tai Tam
  • High-molecular weight polymers and methods of manufacture
    Patent number: 6794462
    Abstract: A composition comprises a solid-stated block copolymer of an aromatic polyester and a caprolactone, wherein the copolymer has been solid state polymerized such that intrinsic viscosity increases at least 20%, the caprolactone content decreases no more than 1.2% absolute and the transesterification increases no more than 3.5% absolute, and wherein the solid-stated copolymer has an intrinsic viscosity of at least 0.82. Particularly preferred chain extension reactions are performed at a temperature of less than 175° C., and even more preferably at less than 165° C. In further aspects of the inventive subject matter, yarns and methods of producing a fiber include contemplated solid-stated block copolymers.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: September 21, 2004
    Assignee: Honeywell International Inc.
    Inventors: Srinivasan Sridharan, John Armstrong Young, Donald James Arthur, Thomas Yiu-Tai Tam
  • High-molecular weight polymers and methods of manufacture
    Publication number: 20030092853
    Abstract: A composition comprises a solid-stated block copolymer of an aromatic polyester and a caprolactone, wherein the copolymer has been solid state polymerized such that intrinsic viscosity increases at least 20%, the caprolactone content decreases no more than 1.2% absolute and the transesterification increases no more than 3.5% absolute, and wherein the solid-stated copolymer has an intrinsic viscosity of at least 0.82. Particularly preferred chain extension reactions are performed at a temperature of less than 175° C., and even more preferably at less than 165° C. In further aspects of the inventive subject matter, yarns and methods of producing a fiber include contemplated solid-stated block copolymers.
    Type: Application
    Filed: October 8, 2002
    Publication date: May 15, 2003
    Inventors: Srinivasan Sridharan, John Armstrong Young, Donald James Arthur, Thomas Yiu-Taitam