Patents by Inventor David C. Bradford

David C. Bradford 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).

  • Polymer-containing solvent purifying process
    Patent number: 8083947
    Abstract: Polymer-containing solution can be purified and the solvent reused by subjecting the solution to microfiltration using tubular filters having an average pore diameter of less than 1 ?m and a filtration pressure of at least 0.35 MPa. This method is particularly useful for reclaiming and reusing solvents that are used in the development or chemical washout of flexographic printing plates.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: December 27, 2011
    Assignee: Eastman Kodak Company
    Inventors: David C. Bradford, M. Zaki Ali
  • POLYMER-CONTAINING SOLVENT PURIFYING PROCESS
    Publication number: 20100213128
    Abstract: Polymer-containing solution can be purified and the solvent reused by subjecting the solution to microfiltration using tubular filters having an average pore diameter of less than 1 ?m and a filtration pressure of at least 0.35 MPa. This method is particularly useful for reclaiming and reusing solvents that are used in the development or chemical washout of flexographic printing plates.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 26, 2010
    Inventors: David C. Bradford, M. Zaki Ali
  • DEVELOPING SOLUTION FOR FLEXOGRAPHIC PRINTING PLATES
    Publication number: 20100068651
    Abstract: A developing or processing solution can be used to provide flexographic relief printing plates. This processing solution comprises dipropylene glycol dimethyl ether (DME) and optionally one or more alcohols or other co-solvents. The processing solution is used to remove non-polymerized material after imaging while leaving polymerized material in a relief image.
    Type: Application
    Filed: August 21, 2009
    Publication date: March 18, 2010
    Inventor: David C. Bradford