Patents by Inventor Kenichi Kumamoto

Kenichi Kumamoto 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).

  • Liquid dispensing container using pressure of liquid to open disharge opening
    Patent number: 5868287
    Abstract: In a liquid dispensing container for dispensing liquid from the liquid storage chamber through the dispensing port, an elastic member, which is normally closed but is opened by the pressure of liquid, is disposed at the dispensing port and the opened part of the elastic member opened by the liquid pressure is used as the dispensing port.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: February 9, 1999
    Assignee: Pentel Kabushiki Kaisha
    Inventors: Takumi Kurokawa, Hideyuki Usami, Kenichi Kumamoto