| 9027303 |
Aqueous gypsum plaster-cement composition and its use |
Hubert Lichtinger |
2015-05-12 |
|
| 8075673 |
Absorption medium and method for removing carbon dioxide from gas streams |
Joachim-Thierry Anders, Johann-Peter Melder, Norbert Asprion, Ole Brettschneider, Iven Clausen +1 more |
2011-12-13 |
|
| 7762404 |
Device for performing the purifying separation of crystals out of their suspension in a contaminated crystal melt |
Joerg Heilek, Dieter Baumann, Ulrich Hammon, Klaus Joachim Mueller-Engel |
2010-07-27 |
|
| 7540884 |
Method for performing the purifying separation of crystals out their suspension in a mother liquor |
Ulrich Hammon, Dieter Baumann, Joerg Heilek, Klaus Joachim Mueller-Engel |
2009-06-02 |
|
| 7393436 |
Thermal separating process for removing at least one stream containing enriched (meth) acrylic monomers |
Ulrich Hammon, Klaus Joachim Mueller-Engel, Juergen Schroeder, Joachim Thiel, Hans Martan |
2008-07-01 |
|
| 7323016 |
Regulation of a wash column in a melt crystallization process |
Jorg Heilek, Dieter Baumann |
2008-01-29 |
|
| 7319166 |
Method of purifying a raw melt of at least one monomer by crystallization |
Ulrich Hammon, Dieter Baumann, Joerg Heilek, Klaus Joachim Mueller-Engel |
2008-01-15 |
|
| 7307189 |
Method for discontinuous purification of crude acrylic acid by means of crystallization |
Dieter Baumann, Joerg Heilek, Klaus Joachim Mueller-Engel |
2007-12-11 |
|
| 7129376 |
Method for the production of a purified melt of at least one monomer |
Ulrich Hammon, Dieter Baumann, Joerg Heilek, Klaus Joachim Mueller-Engel |
2006-10-31 |
$638,000 |
| 7112695 |
Method for the purification of a crude acrylic acid melt |
Dieter Baumann, Jorg Heilek, Klaus Joachim Müller-Engel |
2006-09-26 |
$504,000 |
| 6921837 |
Process for the purification and preparation of acrylic acid or methacrylic acid |
Jorg Heilek, Dieter Baumann, Volker Schliephake |
2005-07-26 |
$645,000 |
| 6852881 |
Purification method for (meth)acrylic acid |
Emile De Decker, Erik Bastiaensen, Dieter Baumann, Jorg Heilek |
2005-02-08 |
$197,000 |
| 6703511 |
Method for obtaining pure n-vinyl pyrrolidone |
Jorg Heilek, Martin Schmidt-Radde, Herbert Helfert |
2004-03-09 |
$708,000 |
| 6700016 |
Method of purifying and producing acrylic acid or methacrylic acid |
Jorg Heilek, Dieter Baumann, Volker Schliephake |
2004-03-02 |
$388,000 |
| 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 |
Otto Machhammer, Theo Proll, Volker Schliephake, Joachim Thiel, Klaus Bröllos |
2003-11-11 |
$610,000 |
| 6596901 |
Method for purifying acrylic acid and methacrylic acid |
Otto Machhammer, Theo Proll, Volker Schliephake, Klaus Joachim Müller-Engel |
2003-07-22 |
$536,000 |
| 6541665 |
Method for purifying acrylic acid or methacrylic acid by crystallization and distillation |
Erik Bastiaensen, Joachim Thiel |
2003-04-01 |
$415,000 |
| 6448439 |
Method for producing acrylic acid and methacrylic acid |
Otto Machhammer, Theo Proll, Volker Schliephake, Joachim Thiel, Klaus Bröllos |
2002-09-10 |
$407,000 |
| 6433222 |
Method for producing acrylic acid |
Jorg Heilek, Volker Schliephake, Theo Proll, Klaus Bröllos, Otto Machhammer +1 more |
2002-08-13 |
$290,000 |
| 6414190 |
Purification of acrylic acid by crystallization by means of vacuum evaporation |
Jorg Heilek, Volker Schliephake |
2002-07-02 |
$273,000 |
| 6242639 |
Preparation of neopentyl glycol hydroxyprivalate granules |
Hans-Jurgen Weyer, Dieter Baumann, Bernhard Maltry |
2001-06-05 |
$269,000 |
| 6063959 |
Purification of crude acrylic acid by crystallization |
Klaus Lehnert, Klaus Joachim Müller-Engel, Gerhard Nestler |
2000-05-16 |
|
| 6051736 |
Preparation of (meth)acrylic acid |
Armin Schraut, Michael-Dieter Ulbrich, Freidrich-Georg Martin, Jorg Heilek |
2000-04-18 |
|
| 6026656 |
Crystallization by evaporation and vapor condensation |
Jorg Heilek |
2000-02-22 |
|
| 5831124 |
Purification of acrylic acid and methacrylic acid |
Otto Machhammer, Albrecht Dams, Theo Proll |
1998-11-03 |
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