Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5212558 | Using thermally transferred invisible ink detectable by exposure to invisible light of specific wavelength | Kenzo Obata | 1993-05-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5212558 | Using thermally transferred invisible ink detectable by exposure to invisible light of specific wavelength | Kenzo Obata | 1993-05-18 |