Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857645 | Process for introducing a thiocarboxylic ester group at the orthoposition of phenols or phenylamines | Hiromu Matsumura, Tsutomu Sugasawa | 1989-08-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857645 | Process for introducing a thiocarboxylic ester group at the orthoposition of phenols or phenylamines | Hiromu Matsumura, Tsutomu Sugasawa | 1989-08-15 |