Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5508016 | Process for production of transition alumina | Osamu Yamanishi | 1996-04-16 |
| 5155085 | Heat resistant transition alumina and process for producing the same | Osamu Yamanishi | 1992-10-13 |
| 4444899 | Process for the production of low density activated alumina formed product | Koichi Yamada, Kunio Nakazato, Katsuzo Shiraishi | 1984-04-24 |
| 4260524 | Hollow catalyst carrier and hollow catalyst made of transition-alumina and process for production thereof | Koichi Yamada, Kunio Nakazato, Kazuo Horinouchi, Masahide Mouri | 1981-04-07 |