Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933407 | Method for producing methacrylic acid from isobutane | Silke Berndt, Gotz-Peter Schindler, Frank Rosowski, Jochen Petzoldt | 2005-08-23 |
| 6888024 | Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid | Martin Dieterle, Jochen Petzoldt, Heiko Arnold | 2005-05-03 |
| 6881702 | Method for producing a multi metal oxide catalyst, method for producing unsaturated aldehydes and/or carboxylic acids and band calcination device | Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth | 2005-04-19 |
| 6867328 | Method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane | Frieder Borgmeier, Andreas Tenten, Hartmut Hibst, Signe Unverricht, Gerhard Cox | 2005-03-15 |
| 6849758 | Treatment of mixtures that contain at least one compound with at least one ethylenically unsaturated group | Gerhard Nestler, Jürgen Schröder | 2005-02-01 |
| 6781017 | Method for the production of acrolein or acrylic acid or the mixture thereof from propane | Otto Machhammer, Goetz-Peter Schindler, Andreas Tenten, Klaus Harth, Peter Zehner +2 more | 2004-08-24 |
| 6740779 | Method for carrying out the catalytic gas phase oxidation of propene to form acrylic acid | Andreas Tenten, Hartmut Hibst, Otto Machhammer, Claus Hechler, Signe Unverricht | 2004-05-25 |
| 6596901 | Method for purifying acrylic acid and methacrylic acid | Bernd Eck, Otto Machhammer, Theo Proll, Volker Schliephake | 2003-07-22 |
| 6518453 | Method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization | Heinz Friedrich Sutoris, Gerhard Wagenblast, Volker Schliephake, Jürgen Schröder, Harald Keller +1 more | 2003-02-11 |
| 6498272 | Method for producing acrylic acid | Jürgen Schröder, Gerhard Nestler | 2002-12-24 |
| 6455732 | Method for storing and/or transporting pure acrylic acid | Heinrich Aichinger, Gerhard Nestler, Jürgen Schröder | 2002-09-24 |
| 6410785 | Method for producing acrolein by heterogeneous catalytic gas-phase partial oxidation of propene | Peter Zehner, Otto Machhammer, Heiko Arnold | 2002-06-25 |
| 6063959 | Purification of crude acrylic acid by crystallization | Klaus Lehnert, Gerhard Nestler, Bernd Eck | 2000-05-16 |