Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322680 | Substituted 2-thiazolyl tetrazolium salt indicators | Gunther Beck, Jürgen Köcher | 1994-06-21 |
| 5290536 | Phenyl substituted 2-thiazolyl tetrazolium salt indicators | Jürgen Köcher | 1994-03-01 |