Patents by Inventor Ryuzo Oosawa

Ryuzo Oosawa 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).

  • Method for drawing brass-plated steel wire
    Patent number: 7162902
    Abstract: This invention relates to steel wires and steel cords used as a reinforcement for rubber articles such as pneumatic tire, industrial belt and the like, particularly steel wires and steel cords having an excellent adhesion property to rubber, in which an amount of phosphorus included as an oxide in a surface layer region from a brass plated surface applied to a circumferential face of a wire up to a depth of 5 nm in a radial direction of the wire is controlled to not more than 1.5 atomic %, whereby an excellent adhesion property between steel cord and coating rubber can be provided even when an adhesion promoter conventionally added in a coating rubber composition for the steel cord is reduced or is not added.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: January 16, 2007
    Assignee: Bridgestone Corporation
    Inventors: Ryuzo Oosawa, Tadasi Honna, Hisakatsu Hara
  • Steel wire for the reinforcement of rubber articles and steel cord for the reinforcement of rubber articles and tire
    Publication number: 20050147818
    Abstract: This invention relates to steel wires and steel cords used as a reinforcement for rubber articles such as pneumatic tire, industrial belt and the like, particularly steel wires and steel cords having an excellent adhesion property to rubber, in which an amount of phosphorus included as an oxide in a surface layer region from a brass plated surface applied to a circumferential face of a wire up to a depth of 5 nm in a radial direction of the wire is controlled to not more than 1.5 atomic %, whereby an excellent adhesion property between steel cord and coating rubber can be provided even when an adhesion promoter conventionally added in a coating rubber composition for the steel cord is reduced or is not added.
    Type: Application
    Filed: February 10, 2005
    Publication date: July 7, 2005
    Inventors: Ryuzo Oosawa, Tadashi Honna, Hisakatu Hara
  • Steel wire and steel cord for the reinforcing rubber article, and tire
    Publication number: 20030178117
    Abstract: This invention relates to steel wires and steel cords used as a reinforcement for rubber articles such as pneumatic tire, industrial belt and the like, particularly steel wires and steel cords having an excellent adhesion property to rubber, in which an amount of phosphorus included as an oxide in a surface layer region from a brass plated surface applied to a circumferential face of a wire up to a depth of 5 nm in a radial direction of the wire is controlled to not more than 1.5 atomic %, whereby an excellent adhesion property between steel cord and coating rubber can be provided even when an adhesion promoter conventionally added in a coating rubber composition for the steel cord is reduced or is not added.
    Type: Application
    Filed: October 21, 2002
    Publication date: September 25, 2003
    Inventors: Ryuzo Oosawa, Tadashi Honna, Hisakatsu Hara