Patents by Inventor Hideto Kunishi

Hideto Kunishi 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).

  • Viscous material extruding dispenser
    Patent number: 8474656
    Abstract: A syringe has a dripless feature by using an O-ring located between a conical disc and a flat plunger disc in an annular groove on a moving plunger. The flat plunger disc has a series of projections that offset the o-ring off the flat plunger disc surface when the plunger is not actuated. When the plunger is actuated, the o-ring distorts to rest on the projections and also on the surface of the flat plunger disc. When the plunger is released, the o-ring's resiliency pulls the o-ring back to its original shape which sucks back the fluid being dispensed so that no or less drips occur.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: July 2, 2013
    Assignees: Kuraray Noritake Dental Inc., Yoshino Kogyosho Co., Ltd.
    Inventors: Hideto Kunishi, Yasujiro Ohara, Katsuhito Kuwahara, Toru Toma, Satoshi Sakamoto
  • VISCOUS MATERIAL EXTRUDING DISPENSER
    Publication number: 20090289084
    Abstract: There is provided a dispenser in which an operation load of a plunger is stable and contents of the dispenser do not leak out after pressing operation is interrupted.
    Type: Application
    Filed: June 25, 2007
    Publication date: November 26, 2009
    Applicants: KURARAY MEDICAL INC., YOSHINO KOGYOSHO CO., LTD.
    Inventors: Hideto Kunishi, Yasujiro Ohara, Katsuhito Kuwahara, Toru Toma, Satoshi Sakamoto