Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9850946 | Bearing bush for use in toggle | Taku Watakabe | 2017-12-26 |
| 9568047 | High-strength brass alloy for sliding member, and sliding member | Taku Watakabe, Kentaro Okubo | 2017-02-14 |
| 8950941 | High-strength brass alloy for sliding member, and sliding member | Taku Watakabe, Kentaro Okubo | 2015-02-10 |
| 7904993 | Spherical bearing for lock gate door and lock gate door having the same | Hiroshi Suda, Vernon Harold Bryant | 2011-03-15 |