Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4670751 | Eraser for electronic blackboard | Hideyuki Kodani, Hajime Ohta | 1987-06-02 |
| 4564078 | Apparatus for storing felt pens for an electronic board | Hideyuki Kodani, Hajime Ohta | 1986-01-14 |