Patents by Inventor A. David P. Harbourne

A. David P. Harbourne 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).

  • Free radical polymerization method having reduced premature termination, apparatus for performing the method, and product formed thereby
    Patent number: 7407617
    Abstract: A method of polymerizing by a free radical polymerization mechanism, product formed thereby, and apparatus for performing this method, are disclosed. The composition to be polymerized by the free radical polymerization mechanism is irradiated by a substantially constant radiation, the radiation being substantially without pulsation. The use of the substantially constant radiation without pulsation reduces premature termination of the polymerization. The substantially constant radiation can be the output of a lamp powered by a constant current, direct current power supply.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: August 5, 2008
    Assignee: Fusion UV Systems, Inc.
    Inventors: Jeffrey K. Okamitsu, A. David P. Harbourne, Sonny Jõnsson, Rong Bao
  • Free radical polymerization method having reduced premature termination, apparatus for performing the method, and product formed thereby
    Patent number: 7037460
    Abstract: A method of polymerizing by a free radical polymerization mechanism, product formed thereby, and apparatus for performing this method, are disclosed. The composition to be polymerized by the free radical polymerization mechanism is irradiated by a substantially constant radiation, the radiation being substantially without pulsation. The use of the substantially constant radiation without pulsation reduces premature termination of the polymerization. The substantially constant radiation can be the output of a lamp powered by a constant current, direct current power supply.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: May 2, 2006
    Assignee: Fusion UV Systems, Inc.
    Inventors: Jeffrey K. Okamitsu, A. David P. Harbourne, Sonny Jonsson, Rong Bao
  • Free radical polymerization method having reduced premature termination, apparatus for performing the method and product formed thereby
    Patent number: 6908586
    Abstract: A method of polymerizing by a free radical polymerization mechanism, product formed thereby, and apparatus for performing this method, are disclosed. The composition to be polymerized by the free radical polymerization mechanism is irradiated by a substantially constant radiation, the radiation being substantially without pulsation. The use of the substantially constant radiation without pulsation reduces premature termination of the polymerization. The substantially constant radiation can be the output of a lamp powered by a constant current, direct current power supply.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: June 21, 2005
    Assignee: Fusion UV Systems, Inc.
    Inventors: Jeffrey K. Okamitsu, A. David P. Harbourne, Rong Bao, Sonny Jönsson
  • Free radical polymerization method having reduced premature termination, apparatus for performing the method, and product formed thereby
    Publication number: 20030092791
    Abstract: A method of polymerizing by a free radical polymerization mechanism, product formed thereby, and apparatus for performing this method, are disclosed. The composition to be polymerized by the free radical polymerization mechanism is irradiated by a substantially constant radiation, the radiation being substantially without pulsation. The use of the substantially constant radiation without pulsation reduces premature termination of the polymerization. The substantially constant radiation can be the output of a lamp powered by a constant current, direct current power supply.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 15, 2003
    Inventors: Jeffrey K. Okamitsu, A. David P. Harbourne