Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4304576 | Silicon nitride ceramic tools and a process for their production | Yoshinori Hattori, Yasushi Matsuo, Isamu Fukuura | 1981-12-08 |
MA
Masayuki Akatsuka
Overall (All Time): #4,101,905 of 4,157,543Top 100%
1
Patents All Time