Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806889 | Ceramic filter | Fumihito Nakano, Kiyoshi Hagawa, Kenji Endo, Kohei Wada | 1989-02-21 |
KJ
Katsuya Jindou
Overall (1989): #90,683 of 140,708Top 65%
1
Patents 1989