Patents by Inventor Stephen B. Mitchell

Stephen B. Mitchell 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).

  • ENERGY CURABLE, HEAT ACTIVATED FLEXOGRAPHIC ADHESIVES FOR DIE-LESS FOILING
    Publication number: 20220056288
    Abstract: Adhesive compositions disclosed herein can be applied to substrates using flexo-printing (via, e.g., photopolymer plate); cured to a hardened, tack-free state; and readily be rendered tacky on application of heat and pressure to accurately transfer foil to the substrates. An example adhesive composition includes a monomer component, an oligomer/resin component including one or more oligomers and one or more inert thermoplastic resins that are soluble in the monomers, and, where required, one or more free radical polymerization initiators.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 24, 2022
    Inventors: Xiang Jun Liu, Jonathan B. Graunke, Eli J. Kendra, Stephen B. Mitchell
  • Antimicrobial compositions
    Patent number: 5413788
    Abstract: An antimicrobial composition for topical use or for incorporation into a coating or structural composition comprises an antimicrobial silver compound, preferably silver chloride, deposited on a physiologically inert oxidic synthetic particulate support material. A preferred support material is titania containing one or more of the crystalline forms anatase, rutile, and brookite.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: May 9, 1995
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Neil Edwards, Stephen B. Mitchell, Allin S. Pratt
  • Silver compound antimicrobial compositions
    Patent number: 4906466
    Abstract: An antimicrobial composition for topical use or for incorporation into a coating or structural composition comprises an antimicrobial silver compound, preferably silver chloride, deposited on a physiologically inert oxidic synthetic particulate support material in particulate form. A preferred support material is titania containing one or more of the crystalline forms anatase, rutile, and brookite.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: March 6, 1990
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Neil Edwards, Stephen B. Mitchell, Allin S. Pratt