Patents by Inventor Izumi Kitazawa

Izumi Kitazawa 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).

  • Sealed container
    Patent number: 6390318
    Abstract: The present invention provides a seal portion mounted on an inner wall of a cap. When the cap is removed from the main body of the container, the seal is positioned below a position where a first screw thread is screwed to a second screw thread. The first screw thread is formed on inside or outside of an outer cylindrical wall of the main body of the container. Whereas, the second screw portion is formed on the outer circumference or the inner circumference of the outer wall portion of the cap.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: May 21, 2002
    Assignee: Denso Corporation
    Inventors: Akihito Tanaka, Shinichi Oda, Izumi Kitazawa