Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6224282 | Side knock-type ball point pen | — | 2001-05-01 |
| 6210058 | Side knock type mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 2001-04-03 |
| 6099182 | Side knock-type mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 2000-08-08 |
| 5971644 | Side knock-type writing instrument | Hidehei Kageyama, Yoshihide Mitsuya | 1999-10-26 |
| 5846009 | Writing tool | Yoshio Noguchi | 1998-12-08 |
| 5836707 | Side knock type mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 1998-11-17 |
| 5791797 | Side knock type mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 1998-08-11 |
| 5788118 | Lead dispensing storage container | Shuhei Kageyama, Shohji Anzai, Yoshihide Mitsuya | 1998-08-04 |
| 5720643 | Lead dispensing storage container | Shuhei Kageyama, Shohji Anzai, Yoshihide Mitsuya | 1998-02-24 |
| 5702193 | Side knock type mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 1997-12-30 |
| 5480249 | Lead dispensing storage container | Shuhei Kageyama, Shohji Anzai, Yoshihide Mitsuya | 1996-01-02 |