Patents Assigned to Bridgestone/Firestone Research, Inc.
  • Rubber compositions containing ground tire rubber
    Patent number: 6265454
    Abstract: Old, spent or worn tires are recycled by removing non-rubber components such as belts, beads, and fabric, and grinding the remaining cured rubber into fine sized particles. The ground particles generally replace equivalent amounts of rubber and additives in various tire formulated components such as tire treads. Good physical properties of the end product are retained.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Jamie J. McNutt, Michael S. James, William J. O'Briskie, William J. Corsaut
  • Tire tread
    Patent number: D445069
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 17, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: James G. Guspodin, Andrea Fantanzo
  • Tire tread
    Patent number: D445369
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Keith A. Dumigan, William B. Allison
  • Tire tread
    Patent number: D445370
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventor: William B. Allison
  • Tire tread
    Patent number: D445371
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventor: William B. Allison
  • Tire tread
    Patent number: D445372
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Timothy J. Lassan, Andrea Fantanzo
  • Tire tread
    Patent number: D445374
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventor: William B. Allison
  • Tire tread
    Patent number: D445375
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventor: William B. Allison
  • Tire tread
    Patent number: D445377
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Andrea Fantanzo, James G. Guspodin
  • Tire tread
    Patent number: D445378
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: John J. Regallis, Michel Beauvais, William B. Allison
  • Tire tread
    Patent number: D445379
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: James G. Guspodin, Andrea Fantanzo
  • Tire tread
    Patent number: D445380
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Andrea Fantanzo, Brian J. Queiser, Craig E. Kneidel
  • Tire tread
    Patent number: D445381
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: July 24, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: James G. Guspodin, Andrea Fantanzo
  • Tire tread
    Patent number: D445728
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 31, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventor: William B. Allison
  • Tire tread
    Patent number: D445731
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: July 31, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Andrea Fantanzo, James G. Guspodin
  • Tire tread
    Patent number: D445732
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: July 31, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventor: William B. Allison
  • Tire tread
    Patent number: D445733
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: July 31, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: James G. Guspodin, Andrea Fantanzo, William B. Allison
  • Tire tread
    Patent number: D446172
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: August 7, 2001
    Assignee: Bridgestone/Firestone, Research, Inc.
    Inventor: John J. Regallis
  • Tire tread
    Patent number: D446174
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: August 7, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Timothy J. Lassan, Andrea Fantanzo
  • Tire tread
    Patent number: D446480
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: August 14, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: James G. Guspodin, Andrea Fantanzo