Patents by Inventor Yukio Yamahara

Yukio Yamahara 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).

  • Polyamide yarn provided with a built-in antibacterial and method for its production
    Patent number: 5135811
    Abstract: Polyamide yarn provided with a built-in antimicrobial capacity characterized by the adhesive on the fiber surface of an antimicrobial agent comprising an organosilicon quaternary ammonium salt and a surfactant comprising an alkyl-, aryl-, alkenyl-, or arylsulfonate salt, optionally with the presence of a level-dyeing promoter.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: August 4, 1992
    Assignee: Dow Corning Corporation
    Inventors: William C. White, Yukio Yamahara, Koji Tajiri
  • Polyamide yarn provided with a built-in antibacterial capacity and method for its production
    Patent number: 4835019
    Abstract: Polyamide yarn provided with a built-in antimicrobial capacity characterized by the adhesive on the fiber surface of an antimicrobial agent comprising an organosilicon quaternary ammonium salt and a surfactant comprising an alkyl-, aryl-, alkenyl-, or arylsulfonate salt, optionally with the presence of a level-dyeing promoter.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: May 30, 1989
    Inventors: William C. White, Yukio Yamahara, Koji Tajiri