Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5320664 | Method of preparing metal element adsorbent and method of adsorbing and separating metal element using the same | — | 1994-06-14 |
| 5300677 | Method of preparing insoluble hydrolysable tannin and method of treating waste liquid with the tannin | Yoshinobu Kamei | 1994-04-05 |
| 5296629 | Method of preparing insoluble hydrolysable tannin and method of treating waste liquid with the tannin | Yoshinobu Kamei | 1994-03-22 |
| 5276251 | Process for treating organic phosphoric acids | Yoshinobu Kamei | 1994-01-04 |