Issued Patents All Time
Showing 51–51 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683850 | Diazo heat-sensitive recording material comprising hydroxy coumarin as a coupler | Tetunori Matushita, Hiroshi Sato, Sadao Ishige, Mitsuyuki Tsurumi | 1997-11-04 |