Patents by Inventor Kenyu Ito

Kenyu Ito 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).

  • Pre-filled syringe
    Patent number: 8764703
    Abstract: In a pre-filled syringe having an intermediate gasket, a liquid drug is enclosed in the second chamber located on the base end side with respect to the intermediate gasket while a powdered drug is enclosed in the first chamber located on the front end side with respect to the intermediate gasket. The intermediate gasket has at least two layers including a front end layer corresponding to a wall of the first chamber and a base end layer corresponding to a wall of the second chamber, and also has a low water-absorptive layer in the layer on the base end side with respect to the front end layer. The base end layer is formed of a material having low water-absorptivity and not lowering a pH of the liquid drug.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: July 1, 2014
    Assignee: Nipro Corporation
    Inventors: Takashi Asai, Tsutomu Takahashi, Kenyu Ito, Atsushi Ishikawa
  • PRE-FILLED SYRINGE
    Publication number: 20130090596
    Abstract: In a pre-filled syringe having an intermediate gasket, a liquid drug is enclosed in the second chamber located on the base end side with respect to the intermediate gasket while a powdered drug is enclosed in the first chamber located on the front end side with respect to the intermediate gasket. The intermediate gasket has at least two layers including a front end layer corresponding to a wall of the first chamber and a base end layer corresponding to a wall of the second chamber, and also has a low water-absorptive layer in the layer on the base end side with respect to the front end layer. The base end layer is formed of a material having low water-absorptivity and not lowering a pH of the liquid drug.
    Type: Application
    Filed: June 8, 2011
    Publication date: April 11, 2013
    Applicant: NIPRO CORPORATION
    Inventors: Takashi Asai, Tsutomu Takahashi, Kenyu Ito, Atsushi Ishikawa