Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11390111 | Writing implement | — | 2022-07-19 |
| 9493028 | Rotating-operation type of writing tool | Masaaki Kubota | 2016-11-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11390111 | Writing implement | — | 2022-07-19 |
| 9493028 | Rotating-operation type of writing tool | Masaaki Kubota | 2016-11-15 |