Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4749132 | Method for crushing massive furnace slag using a swingable type crushing apparatus | Keiji Imai, Shigenori Nagaoka, Hidenaga Ishii, Toshitsugu Kikuchi | 1988-06-07 |
| 4723716 | Operational control method for cylindrical crusher | Keiji Imai, Kyoichi Yahagi, Shigenori Nagaoka | 1988-02-09 |
| 4664321 | Shell structure of heavy-load type rod mill | Keiji Imai, Shigenori Nagaoka, Shinji Kogumazaka, Kyoichi Yahagi, Takeshi Imagawa +2 more | 1987-05-12 |
| 4645133 | Liner for the outlet port of a rod mill | Keiji Imai, Shigenori Nagaoka, Shinji Kogumazaka, Kyoichi Yahagi, Takeshi Imagawa +2 more | 1987-02-24 |
| 4637562 | Rocking slag breaker | Keiji Imai, Shigenori Nagaoka | 1987-01-20 |
| 4606506 | Vertical type roller mill | Gensuke Okada | 1986-08-19 |
| 4562972 | Micropulverizer | Shozi Nagano | 1986-01-07 |
| 4288166 | Apparatus for production of stable slurry of milled coal and a hydrocarbon oil | Yasuyuki Nakabayashi, Yoshio Matsuura, Masashi Hatano, Masaaki Mikamo, Yoshimasa Ebihara +2 more | 1981-09-08 |