Patents by Inventor Hidehira Kageyama

Hidehira Kageyama 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).

  • Automatic pencil
    Patent number: 3947133
    Abstract: A push-button type automatic pencil includes an outer tubular member which is held in the hand of the user and lead rod holding means for holding the lead rod. A lead rod stepping means of a push button type is provided and the lead rod holding means is mounted within the outer member in such a way that the lead rod holding means is movable relative to the outer member, while still holding the lead rod, when the lead rod is pushed backward relative to the outer member. Accordingly, the breaking of the lead rod while writing is eliminated, and a soft writing feel is achieved.
    Type: Grant
    Filed: April 10, 1975
    Date of Patent: March 30, 1976
    Inventors: Hidehira Kageyama, Takahiko Suzuki