| 2025/0100,965 | SEPARATION OF IMPURITIES IN A PROCESS FOR HYDROLYTICALLY DEPOLYMERIZING A POLYAMIDE | Mar 30, 23 | Mar 27, 25 | Not available |
| 2024/0132,446 | COMPOSITIONS AND METHODS FOR REMOVAL OF N-METHYL-2-PYRROLIDONE (NMP) DEGRADATION PRODUCTS AND OTHER FOULANTS FROM NMP PURIFICATION SYSTEMS | May 24, 22 | Apr 25, 24 | Not available |
| 2024/0076,450 | PURIFICATION METHOD FOR LAUROLACTAM | Jan 20, 22 | Mar 07, 24 | Not available |
| 2021/0040,036 | PROCESS FOR THE PURIFICATION OF CAPROLACTAM FROM A SOLUTION OF CRUDE CAPROLACTAM WITHOUT ORGANIC SOLVENT EXTRACTION | Aug 21, 20 | Feb 11, 21 | Not available |
| 2019/0382,339 | Process for the purification of caprolactam from a solution of crude caprolactam without organic solvent extraction | Dec 15, 17 | Dec 19, 19 | Not available |
| 2016/0221,943 | PROCESS FOR THE RECOVERY OF EPSILON-CAPROLACTAM FROM EXTRACT WATER | Jul 07, 14 | Aug 04, 16 | TECHNIP ZIMMER GMBH |
| 2014/0171,638 | PROCESS FOR PREPARING PURIFIED CAPROLACTAM FROM THE BECKMANN REARRANGEMENT OF CYCLOHEXANE OXIME | Dec 18, 13 | Jun 19, 14 | BASF SE |
| 2012/0330,006 | METHOD OF MANUFACTURING EPSILON-CAPROLACTAM | Mar 01, 11 | Dec 27, 12 | SUMITOMO CHEMICAL COMPANY, LIMITED |
| 2011/0224,428 | WASHING OF AN ORGANIC PHASE COMPRISING CAPROLACTAM | Sep 02, 09 | Sep 15, 11 | CAP III B.V. |
| 2011/0190,488 | Methods of Making Cyclic Amide Monomers and Related Derivatives | Jul 24, 09 | Aug 04, 11 | AMYRIS, INC. |
| 2009/0312,542 | SYSTEM AND METHOD FOR RECOVERING CAPROLACTAM FROM REARRANGEMENT MIXTURES | May 29, 09 | Dec 17, 09 | China Petrochemical Development Corporation |
| 2008/0058,513 | System and process for purifying an aqueous solution of crude caprolactam | Aug 31, 07 | Mar 06, 08 | China Petrochemical Development Corporation |
| 2007/0060,750 | Process for purifying caprolactam | Jul 16, 04 | Mar 15, 07 | DSM IP ASSETS B.V. |
| 2006/0041,122 | Method for purifying caprolactam | Nov 11, 03 | Feb 23, 06 | BASF AKTIENGESELLSCHAFT |
| 2005/0176,954 | Process for recovering caprolactam | Nov 25, 02 | Aug 11, 05 | DSM IP ASSETS B.V. |
| 2005/0056,532 | Method for purifying caprolactam from waste containing polyamide using UV radiation | Jul 23, 04 | Mar 17, 05 | ZIMMER AKTIENGESELLSCHAFT |
| 2004/0110,943 | Process for recovering and purifying caprolactam from an organic solvent | Jan 14, 04 | Jun 10, 04 | DSM IP ASSETS B.V. |
| 2003/0143,146 | Method for separating ammoniac | Jan 10, 03 | Jul 31, 03 | BASF AKTIENGESELLSCHAFT |
| 2003/0100,751 | Coupling condensation synthesis of heterocycles | May 20, 02 | May 29, 03 | MORPHOCHEM AKTIENGESELLSCHAFT FUR KOMBINATORISCHE CHEMIE |
| 2003/0023,083 | Method for separating an azepine derivative out of a mixture containing an amine an azepine derivative | Aug 27, 02 | Jan 30, 03 | BASF AKTIENGESELLSCHAFT |