Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5739403 | Process for the production of optionally substituted 4-aminodiphenylamines | Adolf Brill, Fred Schuhmacher | 1998-04-14 |
| 5198550 | Process for the purification of crude 2-mercaptobenzothiazole | Harro Schlesmann, Stefan Dietl | 1993-03-30 |