Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7619120 | Processes for the preparation of diphenylsulfone compounds | Kiyoshi Katsuura, Tomoya Hidaka, Yutaka Takashina | 2009-11-17 |
| 6831201 | Process for producing diphenyl sulfone compound | Kiyoshi Katsuura, Tomoya Hidaka, Yutaka Takashina | 2004-12-14 |