Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021541 | Polycarbonate resin from bis(hydroxy benzoyl oxy-tetra oxa spiro) cpd. | Mitsuhiko Masumoto, Satoshi Kanayama, Toshiaki Asoh | 1991-06-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021541 | Polycarbonate resin from bis(hydroxy benzoyl oxy-tetra oxa spiro) cpd. | Mitsuhiko Masumoto, Satoshi Kanayama, Toshiaki Asoh | 1991-06-04 |