Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5094391 | Pneumatic classifier | Takamiki Tamashige, Mitsuhiro Ito, Hiroaki Tanaka, Hiroyuki Ninomiya, Takeshi Furukawa +1 more | 1992-03-10 |
| 4919795 | Leakage prevention apparatus for a classifier | Satoru Fujii, Hiroaki Tanaka, Takeshi Furukawa, Masaaki Muraoka, Takamiki Tamashige | 1990-04-24 |