Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6299846 | Process for producing aluminum hydroxide from alumina-containing ore | Toru Ogawa, Takahiro Ishida | 2001-10-09 |
| 5833865 | Sedimentation type solid-liquid separator | Yoshio Kumagae, Kazuhisa Ishibashi | 1998-11-10 |
| 5545384 | Process for production of aluminum hydroxide from ore containing alumina | Takahiro Ishida, Yoshio Kumagae, Michikazu Inami, Kazuhisa Ishibashi, Mitsuaki Murakami | 1996-08-13 |
| 5302368 | Process for preparation of alumina | Toshiki Furubayashi, Toshio Ashitani, Toru Ogawa | 1994-04-12 |
| 4426363 | Process for extracting alumina from aluminous ores | Koichi Yamada, Hisakatsu Kato, Yasumi Shiozaki | 1984-01-17 |
| 4421615 | Process for producing metallic gallium | Koichi Yamada, Yasuo Shinya, Hisakatsu Kato | 1983-12-20 |
| 4364919 | Process for producing coarse grains of aluminum hydroxide | Koichi Yamada, Hisakatsu Kato, Yasumi Shiozaki | 1982-12-21 |
| 4311486 | Process for producing coarse grains of aluminum hydroxide | Koichi Yamada, Hisakatsu Kato, Yasumi Shiozaki | 1982-01-19 |
| 4263261 | Method for the removal of impurities from sodium aluminate solution | Koichi Yamada, Hisakatsu Kato | 1981-04-21 |
| 4222992 | Process for the removal of sulfur oxides from exhaust gases using slurry of red mud containing calcium ion | Koichi Yamada, Yasumi Shiozaki | 1980-09-16 |
| 4215094 | Method for the removal of organic substances from alkali metal aluminate solution | Jun-ichi Inao, Koichi Yamada, Hisakatsu Kato | 1980-07-29 |
| 4201749 | Method for the separation of precipitated aluminum hydroxide from sodium aluminate solution | Koichi Yamada, Hisakatsu Kato | 1980-05-06 |