Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6436243 | Process for recovering N-vinyl-2-pyrrolidone | Hitoshi Yano, Akira Kurusu, Yuuji Shimasaki | 2002-08-20 |
| 5833813 | Method of recovering and dehydrating ethylene sulfide | Hitoshi Yano, Hirokazu Ito, Ryuichi Ishikawa, Yukihiro Matsumoto, Teruhisa Kaziwara | 1998-11-10 |
| 5304656 | Process for preparing alkylene sulfides | Hitoshi Yano, Kimio Ariyoshi, Yuuji Shimasaki, Ryuichi Ishikawa, Michio Ueshima | 1994-04-19 |