Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4723716 | Operational control method for cylindrical crusher | Tatsuo Hagiwara, Keiji Imai, Shigenori Nagaoka | 1988-02-09 |
| 4664321 | Shell structure of heavy-load type rod mill | Tatsuo Hagiwara, Keiji Imai, Shigenori Nagaoka, Shinji Kogumazaka, Takeshi Imagawa +2 more | 1987-05-12 |
| 4645133 | Liner for the outlet port of a rod mill | Tatsuo Hagiwara, Keiji Imai, Shigenori Nagaoka, Shinji Kogumazaka, Takeshi Imagawa +2 more | 1987-02-24 |