Issued Patents All Time
Showing 1–25 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6517271 | Double-chuck mechanical pencil | Hidehei Kageyama, Shouji Anzai | 2003-02-11 |
| 6517272 | Double-chuck mechanical pencil | Hidehei Kageyama, Shouji Anzai | 2003-02-11 |
| 6491467 | Writing instrument | — | 2002-12-10 |
| 6379067 | Double-chuck mechanical pencil | Hidehei Kageyama, Tadayoshi Ebinuma | 2002-04-30 |
| 6325130 | Coat transfer tool | Hidehei Kageyama, Sadahiro Anzai | 2001-12-04 |
| 6287036 | Knocking writing utensil | Tadashi Keda | 2001-09-11 |
| 6210058 | Side knock type mechanical pencil | Hidehei Kageyama, Tomiji Ueki | 2001-04-03 |
| 6171397 | Paint film transfer device | — | 2001-01-09 |
| 6099182 | Side knock-type mechanical pencil | Hidehei Kageyama, Tomiji Ueki | 2000-08-08 |
| 6082916 | Mechanical pencil | Hidehei Kageyama | 2000-07-04 |
| 6039484 | Writing instrument | Hidehei Kageyama | 2000-03-21 |
| 6039485 | Double-chuck mechanical pencil | Hidehei Kageyama, Tadayoshi Ebinuma | 2000-03-21 |
| 5997200 | Barrel with finger gripping means | Hidehei Kageyama | 1999-12-07 |
| 5988908 | Barrel with finger gripping means | Hidehei Kageyama | 1999-11-23 |
| 5988914 | Writing instrument | Hidehei Kageyama | 1999-11-23 |
| 5988913 | Double-chuck mechanical pencil | Hidehei Kageyama, Shouji Anzai | 1999-11-23 |
| 5971644 | Side knock-type writing instrument | Hidehei Kageyama, Tomiji Ueki | 1999-10-26 |
| 5947620 | Double-chuck mechanical pencil | Hidehei Kageyama, Shouji Anzai, Tadashi Yamamoto | 1999-09-07 |
| 5890827 | Bar extruding implement with ejector | Hidehei Kageyama, Shouji Anzai | 1999-04-06 |
| 5836707 | Side knock type mechanical pencil | Hidehei Kageyama, Tomiji Ueki | 1998-11-17 |
| 5803637 | Stick-shaped material propelling container | — | 1998-09-08 |
| 5791797 | Side knock type mechanical pencil | Hidehei Kageyama, Tomiji Ueki | 1998-08-11 |
| 5788118 | Lead dispensing storage container | Shuhei Kageyama, Shohji Anzai, Tomiji Ueki | 1998-08-04 |
| 5720643 | Lead dispensing storage container | Shuhei Kageyama, Shohji Anzai, Tomiji Ueki | 1998-02-24 |
| 5713680 | Combined writing tool | Tokiyoshi Yoshino, Shouji Anzai | 1998-02-03 |