Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6261988 | Metal ion-exchanged phosphorus-vanadium compound and solid acid catalyst using the compound | — | 2001-07-17 |
| 5329043 | Method of preparing methacrolein and/or methacrylic acid | Yukio Aoki | 1994-07-12 |
| 5288880 | Process for the manufacture of maleic anhydride | — | 1994-02-22 |
| 5245083 | Method for preparing methacrolein and method for preparing a catalyst for use in the preparation of methacrolein | — | 1993-09-14 |
| 5239115 | Method for producing methacrylic acid | — | 1993-08-24 |
| 5138100 | Method for preparing methacrolein | — | 1992-08-11 |
| 5137863 | Process for controlling degree of dispersion of active component of metal/carrier solid catalyst | Yasushi Yoshida, Osamu TAKAYASU, Kuniaki Nitta | 1992-08-11 |
| 5110782 | Process for producing perovskite-type oxide catalyst | Hatsuo Hirono, Koichi Moriyama, Hideo Fukui | 1992-05-05 |
| 4997802 | Catalyst for preparation of hydrocarbons | Yasushi Yoshida | 1991-03-05 |
| 4996382 | Process for preparation of hydrocarbons | Yasushi Yoshida | 1991-02-26 |