Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6384185 | Process for purifying polycarbonate resin solution | Minoru Inada, Tatsuhide Hosomi, Makoto Mizutani | 2002-05-07 |
| 5244605 | Process for producing halogenated polycarbonate molded article | Toshikazu Umemura | 1993-09-14 |
| 5182363 | Process for producing powder aggregate particle of high molecular weight polycarbonate resin | Tatsuhide Hosomi | 1993-01-26 |
| 5021541 | Polycarbonate resin from bis(hydroxy benzoyl oxy-tetra oxa spiro) cpd. | Mitsuhiko Masumoto, Satoshi Kanayama, Teruo Kawahigashi | 1991-06-04 |
| 4950771 | Dihydroxy compound | Mitsuhito Masumoto, Youichirou Ezaki, Hiroshi Aibe | 1990-08-21 |
| 4924025 | Novel dihydroxy compound | Mitsuhiko Masumoto, Youichirou Ezaki, Hiroshi Aibe | 1990-05-08 |