Patents by Inventor Eiji Yao

Eiji Yao 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).

  • Gasket for injector
    Patent number: D632389
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: February 8, 2011
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Katsushi Maeda, Eiji Yao
  • Gasket for injector
    Patent number: D632784
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: February 15, 2011
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Katsushi Maeda, Eiji Yao
  • Gasket for injector
    Patent number: D633202
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: February 22, 2011
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Katsushi Maeda, Eiji Yao
  • Rubber stopper for vial
    Patent number: D643720
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: August 23, 2011
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Katsushi Maeda, Eiji Yao
  • Rubber stopper for vial
    Patent number: D644104
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: August 30, 2011
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Katsushi Maeda, Eiji Yao