Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5426221 | Separation of acrylic acid from the reaction gases from the catalytic oxidation of propylene and/or acrolein | — | 1995-06-20 |
| 4298763 | Preparation of .alpha.,.beta.-olefinically unsaturated aldehydes of 3 or 4 carbon atoms | Heinz Engelbach, Richard Krabetz, Gerd Duembgen, Walter Beitelschmidt | 1981-11-03 |
| 4259211 | Catalyst for the oxidation of acrolein and methacrolein to acrylic acid and methacrylic acid, respectively | Richard Krabetz, Walter Herrmann, Norbert Scholz, Heinz Engelbach, Gerd-Juergen Engert +2 more | 1981-03-31 |