Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675090 | Method for measuring the amount of an active clayey component contained in molding greensand | Tadashi Nishida | 1997-10-07 |
| 5618223 | Method and apparatus for recycling sand | Osamu Masuno, Takehiko Matsumoto | 1997-04-08 |