| Patent | Date |
|---|
Method For Recovering Raw Materials From Polyurethane Products
App 20220251328 - Steffens; Friedhelm ; et al. | 2022-08-11 |
Method and a system for separating and treating impurities from a hydrogen chloride liquid mixture
Grant 11,267,703 - Rittermeier , et al. March 8, 2 | 2022-03-08 |
Distributor device, in particular for falling film evaporators, and use thereof
Grant 10,894,222 - Drumm , et al. January 19, 2 | 2021-01-19 |
Aniline purification process
Grant 10,889,539 - Merkel , et al. January 12, 2 | 2021-01-12 |
Method for producing TDI-trimerisates with high purity
Grant 10,676,448 - Sanders , et al. | 2020-06-09 |
Aniline Purification Process
App 20200123097 - Merkel; Michael ; et al. | 2020-04-23 |
Distillation column and use thereof for cleaning isocyanates
Grant 10,576,392 - Steffens , et al. | 2020-03-03 |
Distributor Device, In Particular For Falling Film Evaporators, And Use Thereof
App 20200030712 - DRUMM; Christian ; et al. | 2020-01-30 |
Method for producing isocyanates
Grant 10,435,353 - Zechlin , et al. O | 2019-10-08 |
A Method And A System For Separating And Treating Impurities From A Hydrogen Chloride Liquid Mixture
App 20190194018 - RITTERMEIER; Andre ; et al. | 2019-06-27 |
Method for producing isocyanates
Grant 10,239,826 - Steffens , et al. | 2019-03-26 |
Method For Producing Tdi-trimerisates With High Purity
App 20190031625 - Sanders; Josef ; et al. | 2019-01-31 |
Method for producing light-coloured TDI-polyisocyanates
Grant 10,189,945 - Sanders , et al. Ja | 2019-01-29 |
Method For Producing Isocyanates
App 20180370907 - Zechlin; Joachim ; et al. | 2018-12-27 |
Method for dividing fluid streams
Grant 10,143,987 - Keggenhoff , et al. De | 2018-12-04 |
Method for producing TDI-trimerisates with high purity
Grant 10,131,641 - Sanders , et al. November 20, 2 | 2018-11-20 |
Distillation Column And Use Thereof For Cleaning Isocyanates
App 20180318728 - Steffens; Friedhelm ; et al. | 2018-11-08 |
Method For Producing Isocyanates
App 20180194720 - Steffens; Friedhelm ; et al. | 2018-07-12 |
Process For Purifying Raw-material Gases By Fractionation
App 20180186633 - Soppe; Alfred ; et al. | 2018-07-05 |
Process for purifying raw-material gases by fractionation
Grant 10,011,484 - Soppe , et al. July 3, 2 | 2018-07-03 |
Process for purifying raw-material gases by fractionation
Grant 9,938,147 - Soppe , et al. April 10, 2 | 2018-04-10 |
Process for separating an isocyanate prepared by phosgenation of a primary amine in the gas phase from the gaseous crude product of the phosgenation
Grant 9,932,299 - Steffens , et al. April 3, 2 | 2018-04-03 |
Process for operating a gas phase phosgenation plant
Grant 9,845,286 - Knauf , et al. December 19, 2 | 2017-12-19 |
Method for operating a gas-phase phosgenation plant
Grant 9,840,461 - Knauf , et al. December 12, 2 | 2017-12-12 |
Process for obtaining organic isocyanates from distillation residues from isocyanate preparation
Grant 9,688,619 - Tidow , et al. June 27, 2 | 2017-06-27 |
Method For Operating A Gas-phase Phosgenation Plant
App 20170101367 - Knauf; Thomas ; et al. | 2017-04-13 |
Process For Operating A Gas Phase Phosgenation Plant
App 20170096389 - Knauf; Thomas ; et al. | 2017-04-06 |
Device and method for producing phosgene
Grant 9,480,958 - Hollmann , et al. November 1, 2 | 2016-11-01 |
Method for producing isocyanates
Grant 9,376,377 - Steffens , et al. June 28, 2 | 2016-06-28 |
Process for the preparation of isocyanates in the gas phase
Grant 9,365,503 - Biskup , et al. June 14, 2 | 2016-06-14 |
Process For Obtaining Organic Isocyanates From Distillation Residues From Isocyanate Preparation
App 20160159734 - Tidow; Klaus ; et al. | 2016-06-09 |
Method For Producing Isocyanates
App 20160152558 - Steffens; Friedhelm ; et al. | 2016-06-02 |
Process For Purifying Raw-material Gases By Fractionation
App 20160096731 - Soppe; Alfred ; et al. | 2016-04-07 |
Method For Producing Tdi-trimerisates With High Purity
App 20160031834 - SANDERS; Josef ; et al. | 2016-02-04 |
Method For Producing Light-coloured Tdi-polyisocantes
App 20160017097 - SANDERS; Josef ; et al. | 2016-01-21 |
Process For Separating An Isocyanate Prepared By Phosgenation Of A Primary Amine In The Gas Phase From The Gaseous Crude Product Of The Phosgenation
App 20150368190 - STEFFENS; Friedhelm ; et al. | 2015-12-24 |
Device And Method For Producing Phosgene
App 20150165407 - Hollmann; Ulrich ; et al. | 2015-06-18 |
Method for working up distillation residues from isocyanate production
Grant 9,029,595 - Steffens , et al. May 12, 2 | 2015-05-12 |
Method For Working Up Distillation Residues From Isocyanate Production
App 20150126769 - Steffens; Friedhelm ; et al. | 2015-05-07 |
Process for the preparation of isocyanates in the gas phase
Grant 9,024,057 - Biskup , et al. May 5, 2 | 2015-05-05 |
Process for the preparation of isocyanates
Grant 8,563,768 - Bruns , et al. October 22, 2 | 2013-10-22 |
Process for the production of aromatic diisocyanates in the gas
Grant 8,399,702 - Pohl , et al. March 19, 2 | 2013-03-19 |
Process For The Preparation Of Isocyanates
App 20120123152 - Bruns; Rainer ; et al. | 2012-05-17 |
Process for the preparation of toluene-diisocyanate
Grant 8,063,241 - Lorenz , et al. November 22, 2 | 2011-11-22 |
Process for the production of toluene diisocyanate
Grant 8,030,522 - Zechlin , et al. October 4, 2 | 2011-10-04 |
Process For The Preparation Of Toluene-diisocyanate
App 20110021811 - Lorenz; Wolfgang ; et al. | 2011-01-27 |
Process For The Preparation Of Isocyanates In The Gas Phase
App 20100160673 - Bruns; Rainer ; et al. | 2010-06-24 |
Process For The Preparation Of Isocyanates In The Gas Phase
App 20100160674 - Biskup; Klaus ; et al. | 2010-06-24 |
Process For The Preparation Of Isocyanates In The Gas Phase
App 20100152484 - Biskup; Klaus ; et al. | 2010-06-17 |
Method For Dividing Fluid Streams
App 20100071770 - Keggenhoff; Berthold ; et al. | 2010-03-25 |
Process for the preparation of isocyanates
Grant 7,645,900 - Lorenz , et al. January 12, 2 | 2010-01-12 |
Process for the preparation of isocyanates in the gas phase
Grant 7,615,662 - Pohl , et al. November 10, 2 | 2009-11-10 |
Process for the preparation of isocyanates
App 20090209784 - Lorenz; Wolfgang ; et al. | 2009-08-20 |
Process for the distillative separation of aqueous amine solutions
Grant 7,575,660 - Steffens , et al. August 18, 2 | 2009-08-18 |
Process for purification of anhydrous hydrogen chloride gas
Grant 7,555,917 - Brady, Jr. , et al. July 7, 2 | 2009-07-07 |
Process for the production of aromatic discocyanates in the gas
App 20090149672 - Pohl; Fritz ; et al. | 2009-06-11 |
Process for the preparation of isocyanates in the gas phase
Grant 7,541,487 - Pohl , et al. June 2, 2 | 2009-06-02 |
Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes
Grant 7,511,176 - Pohl , et al. March 31, 2 | 2009-03-31 |
Process for the preparation of isocyanates in the gas phase
App 20080167490 - Pohl; Fritz ; et al. | 2008-07-10 |
Process for the preparation of toluene-diisocyanate
App 20080146835 - Lorenz; Wolfgang ; et al. | 2008-06-19 |
Process for the preparation of isocyanates in the gas phase
App 20080146834 - Pohl; Fritz ; et al. | 2008-06-19 |
Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes
App 20080146847 - Pohl; Fritz ; et al. | 2008-06-19 |
Stirring device and process for carrying out a gas-liquid reaction
Grant 7,322,565 - Buse , et al. January 29, 2 | 2008-01-29 |
Process for the production of toluene diisocyanate
App 20070287857 - Zechlin; Joachim ; et al. | 2007-12-13 |
Data processing system and method for regulating an installation
App 20060277094 - Kirsch; Jurgen ; et al. | 2006-12-07 |
Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column
Grant 7,118,653 - Brady , et al. October 10, 2 | 2006-10-10 |
Stirring device and process for carrying out a gas-liquid reaction
App 20060038306 - Buse; Rainer ; et al. | 2006-02-23 |
Process for the distillative separation of aqueous amine solutions
App 20050263385 - Steffens, Friedhelm ; et al. | 2005-12-01 |
Process for purification of anhydrous hydrogen chloride gas
App 20040163411 - Brady, Bill L. JR. ; et al. | 2004-08-26 |
Process for purification of anhydrous hydrogen chloride gas
Grant 6,719,957 - Brady, Jr. , et al. April 13, 2 | 2004-04-13 |
Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column
App 20030230476 - Brady, Bill ; et al. | 2003-12-18 |
Process for purification of anhydrous hydrogen chloride gas
App 20030196764 - Brady, Bill L. JR. ; et al. | 2003-10-23 |
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