Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D609545 | Grindstone | Kazuhisa Ueno, Izumi Araki, Eiki Sakaguchi | 2010-02-09 |
| D486839 | Grinding disc | Hisayuki Murata | 2004-02-17 |
| 6273805 | Grindstone and method of manufacturing the same | — | 2001-08-14 |
| D444483 | Grinding disk | — | 2001-07-03 |
| 6071182 | Grindstone and method of manufacturing the same | — | 2000-06-06 |