Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5972064 | Use of low-volatility pyrazole derivatives having hydrophilic groups as nitrification inhibitors | Norbert Rieber, Randall Evan Gold, Jurgen Dressel | 1999-10-26 |
| 5484941 | Preparation of 3(5)-methylpyrazoles | Ralf Kaestner, Peter Paessler, Norbert Rieber | 1996-01-16 |
| 5420365 | Preparation of 2,4-hexadiyne-1,6-diol | Norbert Rieber | 1995-05-30 |
| 5414086 | Preparation of 4-methylpyrimidines | Norbert Rieber | 1995-05-09 |