Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4665176 | Process for the preparation of 5,6,7,8-tetrahydrofolic acid | Yutaka Hirai, Eri Nagayoshi | 1987-05-12 |
| 4279838 | Process for the preparation of aminoaryl thiophosphates and aminoaryl phosphates | Ryuichi Yamamoto | 1981-07-21 |
| 4256672 | Process for the preparation of phosphoric esters and thiophosphoric esters | Ryuichi Yamamoto | 1981-03-17 |