Patents by Inventor Ulrich Fiebag

Ulrich Fiebag 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 developing exposed radiation-sensitive printing plate precursors
    Patent number: 6391530
    Abstract: A replenisher composition developing exposed radiation-sensitive printing plate precursors for plate/developer systems in which the electrical conductivity of the developer does not decrease to the same extend as the activity of the developer decreases or even increases is disclosed. A method for developing exposed radiation-sensitive printing plates using the replenisher composition is also disclosed.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: May 21, 2002
    Assignee: Kodak Polychrome Graphics, LLC
    Inventors: Hans-Joachim Timpe, Ulrich Fiebag
  • Aqueous developer for negative working lithographic printing plates
    Patent number: 6383717
    Abstract: An aqueous developer for imageable elements that contain a radiation-sensitive initiator system and at least one free radical polymerizable material is disclosed. The developer develops these plates quickly, with high throughput, but with no sludge formation in the developing process. The developer contains water, a buffer, and one or more filter dyes and/or one of more free radical inhibitors. The imageable elements are useful as printing plates.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: May 7, 2002
    Assignee: Kodak Polychrome Graphics, LLC
    Inventors: Ulrich Fiebag, Harald Baumann, Hans-Joachim Timpe
  • Developing system for alkaline-developable lithographic printing plates with different interlayers
    Patent number: 6255042
    Abstract: The invention is aqueous alkaline composition comprising at least one alkali metal silicate, glycerol, at least one glycol and phosphoric acid and/or phosphates. The composition can be used as a developer and replenisher for developing either positive-working or negative-working alkaline developable lithographic printing plates (including thermal plates) independently of the interlayer present in the printing plate.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: July 3, 2001
    Assignee: Kodak Polychrome Graphics, LLC
    Inventors: Ulrich Fiebag, Tondock Uwe
  • Developing system for alkaline-developable lithographic printing plates
    Patent number: 6143479
    Abstract: An aqueous alkaline composition comprising at least one phosphonic acid, at least one polyglycol derivative and at least one glycol. The composition can be used as either a developer or a replenisher for either positive-working or negative-working alkaline developable lithographic printing plates, including thermal plates.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: November 7, 2000
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Ulrich Fiebag, Hans-Joachim Timpe