Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880756 | Silicon nitride sintered product | Masakazu Watanabe, Yo Tajima, Kenji Nakanishi | 1989-11-14 |
KU
Kazuhiro Urashima
Overall (1989): #89,470 of 140,708Top 65%
1
Patents 1989