Patents by Inventor Douglas J. Brownbridge

Douglas J. Brownbridge 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).

  • Ink-jet recording sheet with improved ozone resistance
    Patent number: 6926936
    Abstract: An ink-jet recording material having a high ozone resistance comprises at least one ink-absorbing and at least one dye-fixing layer wherein on the top and/or bottom side of the dye-fixing layer, at least one water-soluble compound exhibiting ionic charge centres is arranged, which compound exhibits a dissociation constant in the region of 1×10?3 to 1×10?14 with a conductivity range ? of 6 to 25 ms at a temperature of 25° C.±1° C. in a 0.1 molar aqueous solution.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: August 9, 2005
    Assignee: Felix Schoeller Jr. Foto-und Spezialpapiere GmbH & Co. KG
    Inventors: Richard A. Barcock, Douglas J. Brownbridge, Natasha M. Dimbleby, Aidan Joseph Lavery, Robert M. Phillips
  • Ink-jet recording sheet with improved ozone resistance
    Publication number: 20030219611
    Abstract: An ink-jet recording material having a high ozone resistance comprises at least one ink-absorbing and at least one dye-fixing layer wherein on the top and/or bottom side of the dye-fixing layer, at least one water-soluble compound exhibiting ionic charge centres is arranged, which compound exhibits a dissociation constant in the region of 1×10−3 to 1×10−14 with a conductivity range &lgr; of 6 to 25 ms at a temperature of 25° C.±1° C. in a 0,1 molar aqueous solution.
    Type: Application
    Filed: May 20, 2003
    Publication date: November 27, 2003
    Applicant: Felix Schoeller jr. Foto-und Spezialpapiere GmbH & Co. KG
    Inventors: Richard A. Barcock, Douglas J. Brownbridge, Natasha M. Dimbleby, Aidan Joseph Lavery, Robert M. Phillips