Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489515 | Gas-phase dehydration reaction process | Shukichi Ugamura, Yuuji Shimasaki, Shinji Takasaki | 2002-12-03 |
| 6090988 | Method for recovering alkyl vinyl ether | Hitoshi Yano, Yuuji Shimasaki | 2000-07-18 |