Patents by Inventor Karl-Heinz Wiedenmann

Karl-Heinz Wiedenmann 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).

  • Packaging assembly for printing plates
    Publication number: 20100000898
    Abstract: The invention relates to a packaging assembly for printing plates and a method for packing the printing plates including a packaging container having a base, and at least one printing plate positioned in the container adjacent the base, wherein an interface having a coefficient of friction of less than 0.30 is disposed between the plate and the base.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 7, 2010
    Inventors: Johannes Bohn, Ly Phuoc Do, Dietmar Dudek, Karl-Heinz Frey, Harald K. Herget, Kurt Lehnung, Johann Pistor, Traugott Schmutz, Reimund Simon, Karl-Heinz Wiedenmann
  • Tonable radiation sensitive recording material with balanced adhesive properties and process for using the same
    Patent number: 6210861
    Abstract: A tonable, radiation sensitive composition, whose adhesion properties can be controlled by the presence of a polydiorganosiloxane with polar and/or ethylenic unsaturated groups and a process for preparing multicolored images using such a composition is described.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 3, 2001
    Inventors: Klaus Uwe Schonfelder, Karl-Heinz Wiedenmann, Uwe Michael Zakrzewski
  • Multiple color proof temporary supports, photopolymerizable materials and pigmented transfer materials
    Patent number: 6168899
    Abstract: This invention makes available a photopolymerizable material containing at least one polymeric binder, photopolymerizable monomer and, at least one photoinitiator, and having a special shear modulus and a specific thickness. These photopolymerizable materials are used in processes for preparing images, especially multiple color proofs. Temporary supports and pigmented transfer materials specifically designed for the preparation of multiple color proofs are described. A pigmented element having a pigmented transfer layer with a polymeric component of polycaprolactone, polytetrahydrofuran and mixtures thereof is disclosed.
    Type: Grant
    Filed: December 7, 1997
    Date of Patent: January 2, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mario Grossa, Udo Dietrich Bode, Manfred Sondergeld, Karl-Heinz Wiedenmann, Ronald John Convers, Steven Max Kalo, Ashok Kamalaksha Kudva
  • Process for preparing multiple color proofs
    Patent number: 5587272
    Abstract: This invention makes available processes for preparing images, especially color proofs. A layer with imagewise tacky and nontacky areas is toned. Toner adhering to the tacky areas is transferred first onto a temporary support and from there onto an image receptor.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: December 24, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mario Grossa, Udo D. Bode, Manfred Sondergeld, Karl-Heinz Wiedenmann, Ronald J. Convers, Steven M. Kalo, Ashok K. Kudva