Ohlbach; Frank

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ohlbach; Frank.The latest application filed is for "hydrogenation catalyst".

Company Profile

0.22.18

Ohlbach; Frank - Dossenheim DE
Ohlbach; Frank - Dusseldorf DE
Ohlbach, Frank - Dossenhcim 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
Method for separating an azepine derivative out of a mixture containing an amine an azepine derivative Grant 7,147,757 - Luyken , et al. December 12, 2	2006-12-12
Hydrogenation catalyst Grant 7,091,153 - Voit , et al. August 15, 2	2006-08-15
Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine Grant 6,972,075 - Luyken , et al. December 6, 2	2005-12-06
Method for generating catalysts Grant 6,905,997 - Ohlbach , et al. June 14, 2	2005-06-14
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
Hydrogenation catalyst Grant 6,852,669 - Voit , et al. February 8, 2	2005-02-08
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 activating passivated iron Grant 6,815,388 - Ohlbach , et al. November 9, 2	2004-11-09
Hydrogenation catalyst App 20040181095 - Voit, Guido ; et al.	2004-09-16
Preparation of primary and secondary amines from nitriles Grant 6,790,995 - Pfeffinger , et al. September 14, 2	2004-09-14
Method for producing polyamides from dinitriles and diamines Grant 6,699,960 - Ohlbach , et al. March 2, 2	2004-03-02
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
Preparation of caprolactam Grant 6,683,179 - Bassler , et al. January 27, 2	2004-01-27
Method for the production of caprolactam Grant 6,683,180 - Ohlbach , et al. January 27, 2	2004-01-27
Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine App 20040015004 - Luyken, Hermann ; et al.	2004-01-22
Hydrogenation of nitriles over Raney catalysts Grant 6,677,486 - Ansmann , et al. January 13, 2	2004-01-13
Preparation of caprolactam Grant 6,677,449 - Bassler , et al. January 13, 2	2004-01-13
Method for generating catalysts App 20030181313 - Ohlbach, Frank ; et al.	2003-09-25
Method for the production of caprolactam App 20030153749 - Ohlbach, Frank ; et al.	2003-08-14
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 caprolactam from 6-aminocapronitrile App 20030125546 - Bassler, Peter ; et al.	2003-07-03
Method for producing cyclic lactams App 20030114664 - Ohlbach, Frank ; et al.	2003-06-19
Method for producing caprolactam on the basis of 6-aminocapronitrile and subsequent purification by crystallization App 20030105322 - Bassler, Peter ; et al.	2003-06-05
Method for producing (2S,4R,9S)-octahydro-1H-indole-2-carboxylic acid and intermediate products therefor Grant 6,559,318 - Ebel , et al. May 6, 2	2003-05-06
Method for separating an azepine derivative out of a mixture containing an amine an azepine derivative App 20030023083 - Luyken, Hermann ; et al.	2003-01-30
Hydrogenation of nitriles over Raney catalysts Grant 6,469,211 - Ansmann , et al. October 22, 2	2002-10-22
Method for simultaneous preparation of 6-aminocapronitrile and hexamethylene diamine Grant 6,462,220 - Luyken , et al. October 8, 2	2002-10-08
Preparation of secondary amines from nitriles App 20020128513 - Pfeffinger, Joachim ; et al.	2002-09-12
Preparation of primary and secondary amines from nitriles App 20020091194 - Pfeffinger, Joachim ; et al.	2002-07-11
Hydrogenation of nitriles over raney catalysts App 20020058842 - Ansmann, Andreas ; et al.	2002-05-16
Hydrogenation of nitriles over Raney catalysts App 20020058841 - Ansmann, Andreas ; et al.	2002-05-16
Iron-based catalyst for hydrogenating alpha-, omega-dinitriles Grant 6,297,394 - Voit , et al. October 2, 2	2001-10-02
Hydrogenation catalyst App 20010025119 - Voit, Guido ; et al.	2001-09-27
Preparation of N-methy1-2-pyrrolidone (NMP) App 20010018528 - Ohlbach, Frank ; et al.	2001-08-30
Method for hydrogenating aliphatic alpha-, omega-dinitriles Grant 6,265,602 - Voit , et al. July 24, 2	2001-07-24

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