Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7762748 | Drill | Kazuya Yanagida, Hiroyuki Higashi | 2010-07-27 |
| 7306411 | Drill with groove width variation along the drill and double margin with a thinning section at the tip | Kazuya Yanagida, Katsuyuki Suzuki, Syoji Takiguchi | 2007-12-11 |