Patents by Inventor David J. Schreifels

David J. Schreifels 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).

  • Coating apparatus and methods of applying a polymer coating
    Publication number: 20040138397
    Abstract: Methods of applying a polymer coating to a substrate are disclosed. By disrupting a bank of polymer precursor, a smooth coating of fast setting polymer can be applied to a substrate. Apparatus for applying a polymer coating is also disclosed. In one embodiment, an oscillating dispenser is used to apply polymer precursor onto a dispersive surface. The polymer precursor flows down the surface and is transferred to a moving web. Flowing solvent downwardly through the dispenser can provide efficient cleaning without the need for disassembly or production delays.
    Type: Application
    Filed: January 6, 2004
    Publication date: July 15, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Robert J. Fleming, Michael E. Mehsikomer, David J. Schreifels, Steven H. Gotz
  • Coating apparatus and methods of applying a polymer coating
    Patent number: 6676754
    Abstract: Methods of applying a polymer coating to a substrate are disclosed. By disrupting a bank of polymer precursor, a smooth coating of fast setting polymer can be applied to a substrate. Apparatus for applying a polymer coating is also disclosed. In one embodiment, an oscillating dispenser is used to apply polymer precursor onto to a dispersive surface. The polymer precursor flows down the surface and is transferred to a moving web. Flowing solvent downwardly through the dispenser can provide efficient cleaning without the need for disassembly or production delays.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: January 13, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Robert J. Fleming, Michael E. Mehsikomer, David J. Schreifels, Steven H. Gotz
  • Release layer for photoconductors
    Patent number: 5652078
    Abstract: This invention is a photoconductive assembly comprising an electroconductive substrate, a photoconductive layer on a surface of the electroconductive substrate, and a release layer over the photoconductive layer wherein the release layer comprises a silicone polymer which has a bimodal distribution of chain lengths between cross-links.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: July 29, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Claire A. Jalbert, Gaye K. Lehman, James F. Sanders, David J. Schreifels, Edward J. Woo