Patents Represented by Law Firm Graham, Geoffrey & Reardon
  • Adhesive-coated impregnated polyurethane foam
    Patent number: 4276107
    Abstract: A method of making a pressure-sensitive adhesive tape comprising a substrate formed of high-density, flexible, open-cell polyurethane foam impregnated with a chlorine-containing elastomer and coated with a pressure-sensitive adhesive.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: June 30, 1981
    Inventor: Joseph Pufahl
  • Non-cyanide bright silver electroplating bath therefor, silver compounds and method of making silver compounds
    Patent number: 4246077
    Abstract: A silver and silver alloy electroplating bath; electrolytic solution; water-soluble silver complex for incorporation therein; and the process for electrodeposition of silver and silver alloys; wherein the electrolytic solution and bath have a pH of at least 6, is free of cyanide, and comprises a water-soluble complex formed from the reaction of a silver salt or compound and an organic complexing agent selected from a pyrrolidine-2,5-dione or a 3-pyrroline-2.5-dione.
    Type: Grant
    Filed: September 26, 1978
    Date of Patent: January 20, 1981
    Assignee: Technic, Inc.
    Inventors: Edward Hradil, Hana Hradil, Alfred M. Weisberg