Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6130347 | Preparation of cyanoacetic esters | Rolf Schneider, Klaus Mundinger, Jakob Fischer | 2000-10-10 |
| 6042799 | Coproduction of acetylene and hydrocyanic acid from acrylonitrile | Klaus Halbritter, Michael Henningsen, Wolf Stegmaier | 2000-03-28 |
| 6013803 | Sterically hindered 4-amino-piperidine with a low dimer content, its production and use | Harald Rust, Alfred Krause, Hardo Siegel, Wolfgang Siegel, Tom Witzel | 2000-01-11 |
| 6011157 | Process for purifying sterically hindered 4-amino piperidines | Harald Rust, Alfred Krause, Hardo Siegel, Wolfgang Siegel, Tom Witzel | 2000-01-04 |
| 5880286 | Acetylation of sterically hindered diamines | — | 1999-03-09 |
| 5861513 | Preparation of 1-acetyl-4-piperidones | — | 1999-01-19 |
| 5859250 | Preparation of 4-amino-2,2,6,6-tetramethylpiperidine (TAD) via 2,2,6,6-tetramethyl-4-(2,2,6,6-tetramethyl-4-piperidylidene) amino!piperidine as intermediate | — | 1999-01-12 |
| 5856494 | Preparation of 2, 2, 6, 6-tetramethylpiperidin-4-one (TAA) | Dieter Hermeling, Hardo Siegel, Wolfgang Harder | 1999-01-05 |