Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637131 | Agent combinations to inhibit or control nitrification of ammonia nitrogen in cultivated soils and substrates | Hans-Jurgen Michel, Sieghard Lang, Hans J. Hartbrich, Margit Grabarse, Heinz Bohland +1 more | 1997-06-10 |