Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5166393 | Process for producing diaryl carbonate | Ryoji Deguchi, Masahiro Tojo | 1992-11-24 |
| 4948871 | Method for producing a crystallized aromatic polycarbonate, and a crystallized aromatic polycarbonate obtained thereby | Tomonari Watanabe, Tetsuro Dozono | 1990-08-14 |
| 4925971 | Method for producing aliphatic o-arylurethanes | Toshiya Aoki, Hiroshi Ishida | 1990-05-15 |
| 4703102 | Aromatic polyether ketones | Hideki Matsuda | 1987-10-27 |
| 4621149 | Production of urethane compounds | Masazumi Chono | 1986-11-04 |
| 4587056 | Process for producing an aliphatic isocyanate | Tomonari Watanabe | 1986-05-06 |
| 4552974 | Process for producing diphenylmethane dicarbamates | Tomonari Watanabe | 1985-11-12 |
| 4547322 | Method for manufacture of diphenylmethane diisocyanates | Masazumi Chono, Tomonari Watanabe, Masashi Kohno | 1985-10-15 |