| 6166248 |
Process for the separation of acrylic acid |
Bernd Heida, Ulrich Hammon, Albrecht Dams |
2000-12-26 |
| 5788895 |
Mass transfer in plate columns and apparatus for this purpose |
Gerhard Altinger, Horst Egly, Rudolf Kaiser |
1998-08-04 |
| 5221767 |
Compositions of the formula Mo.sub.12 P.sub.a V.sub.b X.sup.1 c X.sup.2 d X.sup.3 e Sb.sub.f Re.sub.g S.sub.h O.sub.n |
Karl-Heinz Boehning, Gerd Duembgen, Ulrich Hammon, Richard Krabetz, Franz Merger +2 more |
1993-06-22 |
| 5173468 |
Compositions of the formula MO.sub.12 P.sub.a V.sub.b X.sup.1.sub.c X.sup.2.sub.d X.sup.3.sub.e Sb.sub.f Re.sub.g S.sub.h O.sub.n |
Karl-Heinz Boehning, Gerd Duembgen, Ulrich Hammon, Richard Krabetz, Franz Merger +2 more |
1992-12-22 |
| 5087744 |
Preparation of methacrylic acid |
Richard Krabetz, Gerd Duembgen, Franz Merger, Michael Jaeger, Herbert Vogal |
1992-02-11 |
| 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 |
