Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693693 | Bar code printing and scanning using wax based invisible fluorescent inks | William Berson | 1997-12-02 |
| 5684069 | Composition for invisible ink responsive to infrared light | — | 1997-11-04 |
| 5681381 | Fluorescent red and magenta waterfast ink jet inks | Shunichi Higashiyama | 1997-10-28 |
| 5674314 | Waterfast ink composition for printers | Shunichi Higashiyama | 1997-10-07 |