Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7348443 | Method for producing partial oxidation products and/or partial ammoxidation products of at least one olefinic hydrocarbon | Otto Machhammer, Goetz-Peter Schindler, Klaus Joachim Mueller-Engel | 2008-03-25 |
| 6646161 | Method for the fractional condensation of a hot gas mixture containing acrylic acid or methacrylic acid and having a high proportion of non-condensable constituents | Bernd Eck, Otto Machhammer, Volker Schliephake, Joachim Thiel, Klaus Bröllos | 2003-11-11 |
| 6596901 | Method for purifying acrylic acid and methacrylic acid | Bernd Eck, Otto Machhammer, Volker Schliephake, Klaus Joachim Müller-Engel | 2003-07-22 |
| 6448439 | Method for producing acrylic acid and methacrylic acid | Bernd Eck, Otto Machhammer, Volker Schliephake, Joachim Thiel, Klaus Bröllos | 2002-09-10 |
| 6433222 | Method for producing acrylic acid | Bernd Eck, Jorg Heilek, Volker Schliephake, Klaus Bröllos, Otto Machhammer +1 more | 2002-08-13 |
| 6252122 | Industrial process for the heterogeneously catalytic gas-phase oxidation of propane to form acrolein | Andreas Tenten, Hans-Peter Schildberg | 2001-06-26 |
| 5831124 | Purification of acrylic acid and methacrylic acid | Otto Machhammer, Albrecht Dams, Bernd Eck | 1998-11-03 |
| 5817865 | Preparation of acrylic acid and esters | Otto Machhammer, Toni Dockner, Gerd-Jurgen Engert | 1998-10-06 |
| 5258106 | Electrolysis of alkali metal sulfates | Wolfgang Habermann, Werner Bochnitschek, Johann Fritzmann, Peter Hammes, Walter Weisbrodt | 1993-11-02 |
| 5017725 | Preparation of addition salts of cysteamine with acids | Andreas Hohmann, Wolfgang Reuther, Rolf Fikentscher | 1991-05-21 |
| 4814505 | Purification of n-vinylformamide | Michael Kroener, Willi Schmidt, Alfred Oftring, Heinrich Hartmann | 1989-03-21 |