Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075406 | Process for refining 1,3-dimethyl-2-imidazolidinone | Tadashi Kobayashi, Mitsuo Wada, Hiroshi Takayanagi | 1991-12-24 |
| 5011936 | Process for refining 1,3-dimethyl-2-imidazolidinone | Tadashi Kobayashi, Mitsuo Wada, Hiroshi Takayanagi | 1991-04-30 |