Patents by Inventor Bart Van der Linden

Bart Van der Linden 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).

  • Method for making an offset printing plate according to the silver salt diffusion transfer process
    Patent number: 5905015
    Abstract: The present invention provides a finisher for a lithographic plateobtained by a DTR process comprising (a) hydrophobizing agent(s) in a total concentration between 0.1 g/l and 10 g/l, (a) surface-active compound(s) and (a) polyglycol(s) or (a) carbohydrate(s), characterized in that said finisher further comprises a non-proteinic hydrophilic film-forming binder selected from the group consisting of dextrin, maltodextrin and dextran in a concentration between 10 and 200 g/l.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: May 18, 1999
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Bart Van der Linden, Inge Claes
  • Element with gelatin anti-stress layer for making printing plate according to the silver salt diffusion transfer process
    Patent number: 5620830
    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 antistress composition in water permeable relationship with said image receiving layer, said antistress composition comprising unhardened gelatin in an amount ranging from 0.60 to 1.75 g/m.sup.2, characterized in that at least 50% by weight of said unhardened gelatin belongs to one or more gelatin species whereof a 10% by weight aqueous solution at 36.degree. C. and pH 6 has a viscosity lower than 35 mPa.s at a shearing rate of 1000 s.sup.-1.
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: April 15, 1997
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Paul Coppens, Eric Hoes, Ren e De Keyzer, Bart Van der Linden