Patents by Inventor Seiichi Hato

Seiichi Hato 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).

  • PREFILLED SYRINGE WITH A LIMITED-WITHDRAWAL PLUNGER ROD
    Publication number: 20120232492
    Abstract: A risk of injection liquid contamination due to contact of injection liquid in an injection-liquid filled area in a barrel with the surface in an injection-liquid unfilled area in the barrel by causing a plunger of a prefilled syringe to be inadvertently withdrawn by mishandling which may leads to medical malpractice, is eliminated by the invention. Withdrawal of a plunger 14 is limited by engagement of a barrel 12 in which a withdrawal-limiting member 48 is provided and a the plunger 14 in which a withdrawal-limiting member 54 is provided. As a result of this, contact of the injection liquid L prefilled to a liquid-filled area 32 in the barrel 12 with the surface of a liquid-unfilled area 34 in the barrel by withdrawal of the plunger 14 is prevented.
    Type: Application
    Filed: May 1, 2012
    Publication date: September 13, 2012
    Applicants: KYOWA HAKKO KIRIN CO., LTD., BECTON, DICKINSON AND COMPANY
    Inventor: Seiichi Hato
  • Prefilled syringe with plunger backward movement limiting mechanism
    Publication number: 20050182370
    Abstract: A risk of injection liquid contamination due to contact of injection liquid in an injection-liquid filled area in a barrel with the surface in an injection-liquid unfilled area in the barrel by causing a plunger of a prefilled syringe to be inadvertently withdrawn by mishandling which may leads to medical malpractice, is eliminated by the invention. Withdrawal of a plunger 14 is limited by engagement of a barrel 12 in which a withdrawal-limiting member 48 is provided and a the plunger 14 in which a withdrawal-limiting member 54 is provided. As a result of this, contact of the injection liquid L prefilled to a liquid-filled area 32 in the barrel 12 with the surface of a liquid-unfilled area 34 in the barrel by withdrawal of the plunger 14 is prevented.
    Type: Application
    Filed: March 11, 2003
    Publication date: August 18, 2005
    Inventor: Seiichi Hato