Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7728149 | Process for producing dicarboxylic acid | Hiroyuki Miura | 2010-06-01 |
| 5914428 | Process for preparation of isocyanate compounds | Toyokazu Yagii, Teruo Itokazu, Kenji Oka, Yasutaka Tanaka, Hidetaka Kojima | 1999-06-22 |
| 5773643 | Process for preparation of isocyanate compounds | Toyokazu Yagii, Teruo Itokazu | 1998-06-30 |
| 5736259 | Packing material for high-performance liquid chromatography and process for producing the same | Hiroshi Oda | 1998-04-07 |
| 5380908 | Continuous production of aromatic carbonates | Kozo Kawahashi, Mamoru Watabiki | 1995-01-10 |
| 5138015 | Process for producing polyurethane | Toyokazu Yagii, Toshihide Maruyama | 1992-08-11 |