Patents Represented by Attorney, Agent or Law Firm Bruce J. Hendericks
  • Preparation of surface modified silica
    Patent number: 6465670
    Abstract: A process for the modification of the surface of a silica with a silane compound comprising mixing an aqueous suspension of precipitated silica particulates with a silane compound which is dissolved in an organic solvent, in the presence of a phase transfer catalyst.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: October 15, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Ghislain Adolphe Leon Thise, Giorgio Agostini
  • Rubber article containing a bismaleimide and a bis benzothiazolydithio end capped compound
    Patent number: 6079468
    Abstract: This invention relates to the discovery that the combination of a bismaleimide compound and a bis benzothiazolyldithio end capped compound provides for excellent vulcanization of rubbers and results in desirable reversion resistant rubbers properties.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: June 27, 2000
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard Michael D'Sidocky, Neil Arthur Maly, Lawson Gibson Wideman
  • Polysulfides of n-methylpyrrolidinone
    Patent number: 5777012
    Abstract: The present invention relates polysulfides of N-methylpyrrolidinone and to rubber compositions containing such polysulfides. Addition of the polysulfides to rubber improves the hysteresis, accelerates the cure rate and improves filler dispersion.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: July 7, 1998
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Lawson Gibson Wideman, Shingo Futamura
  • Silica reinforced rubber composition
    Patent number: 5719208
    Abstract: The present invention relates to a silica reinforced rubber composition and pneumatic tires having treads comprised of the silica reinforced rubber compositions. The silica reinforced rubber composition comprises an elastomer, silica, optionally carbon black and a silica coupler of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 individually represent hydrogen or an alkyl of 1 to 6 carbon atoms; X represents oxygen or sulfur; and Z represents a hydroxyalkyl group of 2 to 7 carbon atoms.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: February 17, 1998
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Lawson Gibson Wideman, Paul Harry Sandstrom, Denise Jeannette Keith