Patents by Inventor David A. Strawser

David A. Strawser 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).

  • Methods for removing acrylic-based polymer coatings
    Patent number: 5609693
    Abstract: Methods useful for removing an acrylic-based polymeric material located on a surface, for example, a surface of a piece of process equipment. The method includes contacting an acrylic-based polymeric material located on the surface of a piece of equipment with a composition containing at least about 20% by weight of water and an organic component containing at least one alkylene oxide group, preferably a plurality of alkylene oxide groups, per molecule in an amount effective to solubilize at least a portion of the acrylic-based polymeric material.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: March 11, 1997
    Assignee: Dober Chemical Corp.
    Inventors: John F. Dobrez, David A. Strawser
  • Conductive metallization of substrates via developing agents
    Patent number: 4997674
    Abstract: A conductive metal layer is formed on a substrate by depositing copper or nickel particles on the substrate, contacting the metal particles with a specified developing agent, and heating the metal particles and the developing agent. The coated substrates have conductive surfaces and are useful for a variety of uses such as EMI shielding and printed circuit boards.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: March 5, 1991
    Assignee: Akzo America Inc.
    Inventors: William J. E. Parr, Ronald E. Hutton, Paul Y. Y. Moy, Dieter Frank, David A. Strawser