Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5482192 | Plate brick cartridge for a slide gate valve, and slide gate valve of using the cartridge | Mitsukuni Sato, Yosuke Kobayashi, Kenji Yamamoto | 1996-01-09 |
| 4913314 | Opening element for an insert nozzle of a slide gate valve apparatus and a method of opening said apparatus | Takashi Otsuka, Masaru Terao, Kenji Yamamoto, Mototsugu Osada | 1990-04-03 |
| 4840296 | Clamping and fixing apparatus for a refractory-made plate for a slide gate valve for controlling a molten steel flow | Takashi Otsuka, Kenji Yamamoto, Tadao Taniguchi, Yoshifumi Shigeta, Mototsugu Osada | 1989-06-20 |
| 4249680 | Sector sliding plate brick having discharge ports and an improved sliding nozzle apparatus | Morihiro Kimura, Kenji Yamamoto | 1981-02-10 |