Patents by Inventor Tatsuo Ikegami

Tatsuo Ikegami 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).

  • Patent number: 5186562
    Abstract: An elongate handwriting implement with a rotatable decoration on the rear end is disclosed. The rear end of an elongate handwriting casing has the decoration. The decoration includes a tubular fixed element fitting around the rear end of the handwriting casing and a hollow rotatable decoration body. The cylindrical surface of the rear end of the fixed element has a plurality of outwardly radially extending camming pins. The front end of the decoration body is open. The interior surface of the decoration body has an annular cam follower defining a plurality of follower grooves engaging the camming pins. The front ends of the follower grooves are open. The decoration body is rotatably and axially movably mounted to the fixed element in such a manner that the camming pins can be in and out of engagement with the follower grooves. The decoration body is rotatably connected to a handle assembly for a writing core through a decoration core extending in the axis of and within the fixed element.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: February 16, 1993
    Assignee: Yoshinaga Corporation
    Inventors: Shigeo Yoshinaga, Tatsuo Ikegami, Seiji Osaki
  • Patent number: D342277
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: December 14, 1993
    Assignee: Yoshinaga Corporation
    Inventors: Shigeo Yoshinaga, Tatsuo Ikegami, Seiji Osaki
  • Patent number: D382863
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: August 26, 1997
    Assignee: International Business Machines Corporation
    Inventors: Yasuhiro Horiuchi, Tatsuo Ikegami