Patents by Inventor Hidero Kato

Hidero Kato 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).

  • Syringe plunger with one piece hollow gasket and plunger rod
    Patent number: 9731077
    Abstract: A plunger for a syringe, in which a plunger rod can be prevented by a simple structure from unavoidably falling out of place. The plunger for a syringe includes the plunger rod and a gasket. The gasket is closed at its upper end and has an inner space, and an opening having a diameter smaller than the diameter of the inner space is provided in the lower end of the gasket. The plunger rod has a collar installed at the tip of the plunger rod. When the collar is positioned in the inner space of the gasket, the plunger rod and the gasket are freely movably fitted together without intimate contact between them.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: August 15, 2017
    Assignee: NIPRO CORPORATION
    Inventors: Shigeki Tanaka, Masanobu Iwasa, Ryohei Namba, Hidero Kato, Teruhisa Hirobe
  • PLUNGER FOR INJECTOR, AND SYRINGE AND PREFILLED SYRINGE THAT USES THE SAME
    Publication number: 20110178475
    Abstract: A plunger for a syringe, in which a plunger rod can be prevented by a simple structure from unavoidably falling out of place. The plunger for a syringe includes the plunger rod and a gasket. The gasket is closed at its upper end and has an inner space, and an opening having a diameter smaller than the diameter of the inner space is provided in the lower end of the gasket. The plunger rod has a collar installed at the tip of the plunger rod. When the collar is positioned in the inner space of the gasket, the plunger rod and the gasket are freely movably fitted together without intimate contact between them.
    Type: Application
    Filed: July 31, 2006
    Publication date: July 21, 2011
    Inventors: Shigeki Tanaka, Masanobu Iwasa, Ryohei Namba, Hidero Kato, Teruhisa Hirobe