Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5570499 | Bolt-tightened type coupling | Michio Kyoya, Tokushi Koumaru | 1996-11-05 |
RK
Rakuzo Katayama
Mitsubishi Mining: 1 patents #886 of 2,247Top 40%
Overall (All Time): #3,756,107 of 4,157,543Top 95%
1
Patents All Time