Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5915872 | Erasing liquid pen | Minoru Machida, Norio Moriyama | 1999-06-29 |
| 5876140 | Cap device | Minoru Machida, Norio Moriyama | 1999-03-02 |
| D388119 | Pen for correction liquid or regular ink | — | 1997-12-23 |
| D378762 | Mechanical pencil | Takao Kikuchi | 1997-04-08 |