Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800193 | Recording material | Keiso Saeki, Masanobu Takashima, Ken Iwakura, Masato Satomura | 1989-01-24 |
TS
Takekatsu Sugiyama
Overall (1989): #52,293 of 140,708Top 40%
1
Patents 1989