Patents Represented by Attorney, Agent or Law Firm John H. Hornickel, Esq.
  • Silica containing tire compositions for suppression of static charge accumulation
    Patent number: 6191206
    Abstract: Rubber tire component compositions containing silica have effective amounts of extra conductive carbon black to dissipate static electricity. The volume resistivity in Ohm-centimeters of the component such as a tread is generally 108 or less. The extra conductive carbon black generally has a BET surface area of at least 500 square meters per gram and the silica is generally utilized in amounts of at least 20 parts by weight per 100 parts by weight of the rubber.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: February 20, 2001
    Assignee: Bridgestone/Firestone, Inc.
    Inventor: Mario N. Detrano
  • Antistatic tire
    Patent number: 6183581
    Abstract: An antistatic tire and relative production method, whereby a portion of a tread made of an electrically insulating mix is hollowed out and filled with a cement (C) in the form of a carbon black mix in a volatile liquid; the carbon black mix being left inside the hollow portion when the volatile liquid evaporates, and defining inside the tread at least one conducting body communicating with a rolling surface of the tire.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: February 6, 2001
    Assignee: Bridgestone Corporationn
    Inventors: Stefano Ducci, Yochiro Kondo, Paolo Straffi, José Silicani