Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761089 | Synthetic resin pen nib | Norigi Kurihara | 1988-08-02 |
| 4597932 | Method of manufacturing synthetic resin pen nibs | Norigi Kurihara | 1986-07-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761089 | Synthetic resin pen nib | Norigi Kurihara | 1988-08-02 |
| 4597932 | Method of manufacturing synthetic resin pen nibs | Norigi Kurihara | 1986-07-01 |