Patents by Inventor Hendrik Kokelenberg

Hendrik Kokelenberg 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).

  • Imaging element comprising a photopolymerizable composition
    Patent number: 5681683
    Abstract: The present invention provides an imaging element comprising on a hydrophilic base a hydrophobic photopolymerizable composition capable of being irradiated with actinic light through the support and/or through the front and containing a photopolymerizable composition characterized in that a water-swellable barrier layer comprising at least one non-proteinic water-soluble film-forming polymer is located between said hydrophilic base and said hydrophobic photopolymerizable composition, contiguous to the hydrophilic base and is coated at a ratio of 0.01 to 2.0 g/m2, said water-swellable barrier layer being capable of being peeled off of said hydrophilic base by dry development.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: October 28, 1997
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Eddie Daems, Joan Vermeersch, Marc Van Damme, Luc Leenders, Thomas Nouwen, Hendrik Kokelenberg
  • Imaging element for making lithographic printing plates according to the silver salt diffusion transfer process
    Patent number: 5665516
    Abstract: The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iii) an intermediate layer between said image receiving layer and said photosensitive layer, characterized in that said intermediate layer comprises particles of an alkali insoluble polymeric organic compound obtainable by polycondensation, said particles having a number average size between 0.02 .mu.m and 10 .mu.m.According to the present invention there is also provided a method for making an offset printing plate according to the silver salt diffusion transfer process by using said imaging element.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: September 9, 1997
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Hendrik Kokelenberg, Ronny De Clercq, Jan Gilleir, Paul Coppens, Johan Loccufier