Patents by Inventor Roger John Hopper

Roger John Hopper 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).

  • Patent number: 6397910
    Abstract: A retreaded tire comprised of a tread and carcass with an intervening rubber layer, conventionally referred to as a cushion, wherein the tread has an oil rich rubber-based adhesive on its inner surface at the interface between said tread and cushion. Said oil rich rubber based adhesive is free, or substantially free, of volatile organic compounds, particularly volatile organic solvents. Alternately, the oil-rich rubber-based adhesive may contain oil and volatile organic solvent wherein oil is the major component insofar as the oil and solvent is concerned.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: June 4, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Cheryl Ann Losey, Arthur Webster Magee, Roger John Hopper, Richard Michael D'Sidocky
  • Patent number: 5981633
    Abstract: The present invention relates to a rubber composition containing silica reinforcement and pneumatic tires having treads comprised of such rubber composition. The rubber composition comprises an elastomer, silica, optionally carbon black, and a silica coupler comprised of an N,N'-diorgano-N,N'-dithiobis (organosulfonamide).
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 9, 1999
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Paul Harry Sandstrom, Roger John Hopper, Joseph Andrew Kuczkowski
  • Patent number: 5756590
    Abstract: The subject invention discloses a process for preparing an N-chloro(or bromo)thio-sulfonamide-modified terpolymer which comprises reacting:(a) a terpolymer of ethylene, an .alpha.-olefin containing from 3-16 carbon atoms, and 5-ethylidene-2-norbornene, with(b) an N-chloro(or bromo)thio-sulfonamide of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are selected from the group consisting of alkyl radicals having 1 to 20 carbon atoms, aralkyl radicals having 7 to 20 carbon atoms and aryl and substituted aryl radical having 6 to 10 carbon atoms and wherein R.sup.1 is also selected from radicals having the formula: ##STR2## wherein R.sup.3 and R.sup.4 are individually selected from said alkyl, aralkyl, aryl and substituted aryl radicals and wherein R.sup.3 and R.sup.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: May 26, 1998
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Roger John Hopper