Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7380443 | Hardness testing apparatus | Masaharu Tsujii, Fumihiko Koshimizu, Eiji Furuta, Ryouji Nakamura, Ryotaro Fukuchi | 2008-06-03 |
| 7121136 | Hardness testing apparatus | Masaharu Tsujii, Fumihiko Koshimizu, Eiji Furuta, Ryouji Nakamura, Ryotaro Fukuchi | 2006-10-17 |