Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618223 | Method and apparatus for recycling sand | Kazuharu Matsui, Takehiko Matsumoto | 1997-04-08 |
| 5507715 | Device for cleaning adhering material off of sand | Iwao Tomita, Kazuharu Matsui, Akio Isono, Takehiko Matsumoto, Tsuyoshi Murata +1 more | 1996-04-16 |