Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5777161 | Process for producing highly pure terephthalic acid by use of dispersion medium replacement apparatus | — | 1998-07-07 |
| 5712412 | Process for producing highly pure terephthalic acid | Fumio Ohkoshi, Fumiya Zaima | 1998-01-27 |
| 5705682 | Process for producing highly pure terephthalic acid | Fumio Ohkoshi, Fumiya Zaima | 1998-01-06 |
| 5684187 | Process for producing highly pure terephthalic acid | Fumio Ohkoshi, Fumiya Zaima | 1997-11-04 |
| 5679847 | Process for producing terephthalic acid | Fumio Ohkoshi, Fumiya Zaima | 1997-10-21 |