Patents by Inventor Sabine Rapp

Sabine Rapp 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).

  • Process for preparing a flexographic printing plate
    Patent number: 7682775
    Abstract: A process for preparing a flexographic printing plate comprising providing a photosensitive element comprising a support and at least one photopolymerizable layer, providing a photomask adjacent the photopolymerizable layer opposite the support, exposing the photosensitive element with ultraviolet radiation between 200 and 300 nm through the photomask, exposing the photosensitive element with ultraviolet radiation between 310 and 400 nm through the photomask to photopolymerize areas of the photopolymerizable layer, and treating the exposed photosensitive element to remove unpolymerized areas, thereby forming a relief surface suitable for printing.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: March 23, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Sabine Rapp, Thies Knudsen
  • Process for preparing a flexographic printing plate
    Publication number: 20050196701
    Abstract: A process for preparing a flexographic printing plate comprising providing a photosensitive element comprising a support and at least one photopolymerizable layer, providing a photomask adjacent the photopolymerizable layer opposite the support, exposing the photosensitive element with ultraviolet radiation between 200 and 300 nm through the photomask, exposing the photosensitive element with ultraviolet radiation between 310 and 400 nm through the photomask to photopolymerize areas of the photopolymerizable layer, and treating the exposed photosensitive element to remove unpolymerized areas, thereby forming a relief surface suitable for printing.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 8, 2005
    Inventors: Sabine Rapp, Thies Knudsen