Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833021 | Non-impact electrothermic recording material | Ryochi Shimura | 1989-05-23 |
YK
Yukio Konagaya
Overall (1989): #39,611 of 140,708Top 30%
1
Patents 1989