Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842979 | Black color heat-sensitive diazo microcapsule recording material with benzoylacetic amide coupler | Toshimasa Usami, Hiroshi Kamikawa, Toshiharu Tanaka | 1989-06-27 |
SI
Sadao Ishige
Overall (1989): #59,392 of 140,708Top 45%
1
Patents 1989