Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5162906 | Apparatus for observing the interior of a hot furnace | Takashi Yamamura, Shingo Nonaka, Kazuo Kawano | 1992-11-10 |
| 4981731 | Method for gunning a refractory composition | Takashi Yamamura, Yukitoshi Kubota, Ichiro Hattori | 1991-01-01 |
| 4292082 | Unshaped refractories | Hiroyuki Danjyo, Shigeru Okuda | 1981-09-29 |
| 4261752 | Gunning refractories | Hiroyuki Danjyo, Shojiro Sawada, Fumiyoshi Hashimoto | 1981-04-14 |