Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6126350 | Writing utensil | Sachio Arai, Brian Booker | 2000-10-03 |
| 5961236 | Dispenser for selectively extending and retracting a substantially stick-shaped object and writing instrument with the dispenser | — | 1999-10-05 |
| 5961237 | Writing instrument | Sachio Arai, Tadashi Yamamoto, Tadayoshi Ebinuma | 1999-10-05 |
| 5927882 | Dispenser for selectively extending and retracting a substantially stick-shaped object and writing instrument | — | 1999-07-27 |
| 5826999 | Mechanical pencil | — | 1998-10-27 |
| 5810496 | Writing instrument | Sachio Arai, Tadashi Yamamoto, Tadayoshi Ebinuma | 1998-09-22 |
| 5788118 | Lead dispensing storage container | Shohji Anzai, Tomiji Ueki, Yoshihide Mitsuya | 1998-08-04 |
| 5720643 | Lead dispensing storage container | Shohji Anzai, Tomiji Ueki, Yoshihide Mitsuya | 1998-02-24 |
| 5700101 | Writing tool | Toshihiko Kageyama, Youichi Nakazato, Yoshihide Mitsuya | 1997-12-23 |
| 5683191 | Writing tool | Toshihiko Kageyama, Youichi Nakazato, Yoshihide Mitsuya | 1997-11-04 |
| 5549404 | Stick-shaped material drive container and supply cassette | Shoji Anzai, Yoshihide Mitsuya | 1996-08-27 |
| 5547301 | Writing instrument with rotatable advancement and retraction | Sachio Arai, Tadashi Yamamoto, Tadayoshi Ebinuma | 1996-08-20 |
| 5480249 | Lead dispensing storage container | Shohji Anzai, Tomiji Ueki, Yoshihide Mitsuya | 1996-01-02 |
| 5413428 | Writing instrument | — | 1995-05-09 |
| 5362166 | Flat stick-shaped material propelling container | Tadashi Yamamoto | 1994-11-08 |
| 5306107 | Twin-type stick-shaped material extending container | Shoji Anzai, Yoshihide Mitsuya | 1994-04-26 |
| 5263786 | Rotary-cam ball-point pen | — | 1993-11-23 |
| 5236270 | Writing tool for advancing lead with eraser dispenser | Toshihiko Kageyama, Youichi Nakazato, Yoshihide Mitsuya | 1993-08-17 |
| 5207522 | Knock type mechanical pencil with retractable eraser | Toshihiko Kageyama, Youichi Nakazato, Yoshihide Mitsuya | 1993-05-04 |
| 5184908 | Writing implement with side actuator | Tadashi Yamamoto, Takahiko Suzuki | 1993-02-09 |
| 5165813 | Container with snap-in chuck and chuck ring | Tadayoshi Ebinuma, Yoshio Noguchi, Yoshihide Mitsuya | 1992-11-24 |
| 5149219 | Swing-type mechanical pencil | Takahiko Suzuki, Yuichi Yamagishi | 1992-09-22 |
| 5022774 | Writing tool with eraser dispenser | Toshihiko Kageyama, Youichi Nakazato, Yoshihide Mitsuya | 1991-06-11 |
| 4976561 | Writing tools | — | 1990-12-11 |
| 4973179 | Clip actuated latch mechanism for retractable writing instruments | Youichi Nakazato, Masuo Kubota, Yoshihide Mitsuya | 1990-11-27 |