MAIXNER; Stefan

Patent Applications and Registrations

Patent applications and USPTO patent grants for MAIXNER; Stefan.The latest application filed is for "heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates".

Company Profile

1.20.18

MAIXNER; Stefan - Ludwigshafen DE
Maixner; Stefan - Schwetzingen DE
Maixner; Stefan - Scwetzingen DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Heterogeneous Catalysts For The Direct Carbonylation Of Nitro Aromatic Compounds To Isocyanates App 20210002210 - TITLBACH; Sven ; et al.	2021-01-07
Process for preparing isocyanates in dialkyl carbonates as solvent Grant 10,435,354 - Heilig , et al. O	2019-10-08
Process For Preparing Isocyanates In Dialkyl Carbonates As Solvent App 20180346414 - HEILIG; Manfred ; et al.	2018-12-06
Process for preparing isocyanates in dialkyl carbonates as solvent Grant 10,093,615 - Heilig , et al. October 9, 2	2018-10-09
Process for preparing aromatic isocyanates Grant 8,829,232 - Penzel , et al. September 9, 2	2014-09-09
Process for preparing isocyanates Grant 8,772,535 - Boehling , et al. July 8, 2	2014-07-08
Method for producing toluylenediamine by hydrogenating dinitrotoluene Grant 8,614,356 - Coelho Tsou , et al. December 24, 2	2013-12-24
Process For Preparing Isocyanates App 20120197038 - Bohling; Ralf ; et al.	2012-08-02
Process for preparing isocyanates Grant 8,212,069 - Boehling , et al. July 3, 2	2012-07-03
Method For Producing Toluylenediamine By Hydrogenating Dinitrotoluene App 20110275858 - Coelho Tsou; Joana ; et al.	2011-11-10
Process For Preparing Aromatic Isocyanates App 20110251425 - Penzel; Ulrich ; et al.	2011-10-13
Iron-containing material suitable for use as hydrogenation catalyst Grant 7,875,740 - Ansmann , et al. January 25, 2	2011-01-25
Process For Preparing Isocyanates App 20100317889 - Boehling; Ralf ; et al.	2010-12-16
Method for purifying caprolactam Grant 7,501,047 - Luyken , et al. March 10, 2	2009-03-10
Method for reducing the content of an unsaturated amine in a mixture containing an amino nitrile, a diamine, a dinitrile or mixtures thereof Grant 7,385,073 - Maixner , et al. June 10, 2	2008-06-10
Method for the distillative recovery of toluylenediamine Grant 7,342,134 - Knoesche , et al. March 11, 2	2008-03-11
Purification of caprolactam Grant 7,217,818 - Fischer , et al. May 15, 2	2007-05-15
Method for the distillative recovery of toluylenediamine App 20070083065 - Knoesche; Carsten ; et al.	2007-04-12
Iron-containing oxidic material suitable for use as hydrogenation catalyst precursor Grant 7,115,781 - Ansmann , et al. October 3, 2	2006-10-03
Method for the production of a dicarboxylic acid from acrylic acid App 20060122425 - Bassler; Peter ; et al.	2006-06-08
Method for purifying caprolactam App 20060090994 - Luyken; Hermann ; et al.	2006-05-04
Method for purifying caprolactam App 20060041122 - Fischer; Rolf-Hartmuth ; et al.	2006-02-23
Method for reducing the content of an unsaturated amine in a mixture containing an amino nitrile, a diamine, a dinitrile or mixtures thereof App 20050222449 - Maixner, Stefan ; et al.	2005-10-06
Method for separating ammonia from solutions containing caprolactam and ammonia Grant 6,896,772 - Luyken , et al. May 24, 2	2005-05-24
Method for producing a polymer, using caprolactam Grant 6,878,798 - Ohlbach , et al. April 12, 2	2005-04-12
Iron-containing oxidic material suitable for use as hydrogenation catalyst precursor App 20040254070 - Ansmann, Andreas ; et al.	2004-12-16
Iron-containing material suitable for use as hydrogenation catalyst App 20040254059 - Ansmann, Andreas ; et al.	2004-12-16
Method for reducing the content of an unsaturated amine in a mixture containing an amine and a nitrile Grant 6,828,457 - Ohlbach , et al. December 7, 2	2004-12-07
Method for reducing the content of an unsaturated amine in a mixture containing an amine and a nitrile App 20040030174 - Ohlbach, Frank ; et al.	2004-02-12
Preparation of cyclic lactams Grant 6,686,465 - Ohlbach , et al. February 3, 2	2004-02-03
Preparation of cyclic lactams Grant 6,683,178 - Ohlbach , et al. January 27, 2	2004-01-27
Method for producing a polymer, using caprolactam App 20030135019 - Ohlbach, Frank ; et al.	2003-07-17
Method for separating ammonia from solutions containing caprolactam and ammonia App 20030132098 - Luyken, Hermann ; et al.	2003-07-17
Method for producing cyclic lactams App 20030125544 - Ohlbach, Frank ; et al.	2003-07-03
Method for producing cyclic lactams App 20030114664 - Ohlbach, Frank ; et al.	2003-06-19

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.