Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798615 | Process for making a filter for molten metal having a high melting point | Shigemi Fukuta, Toshinari Amakasu, Ken Ugata | 1989-01-17 |
SY
Shoichi Yoshino
Overall (1989): #56,426 of 140,708Top 45%
1
Patents 1989