C07C 209/84
Purification
C07C209/84 (Purification) appears on 253 US grants and 239 published applications in this corpus.
Search patents in C07C- Granted patents
- 253
- Published applications
- 239
- Assignees
- 167
- Inventors
- 794
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 8 | 8 |
| 2003 | 5 | 5 |
| 2004 | 4 | 8 |
| 2005 | 3 | 11 |
| 2006 | 6 | 7 |
| 2007 | 9 | 17 |
| 2008 | 3 | 9 |
| 2009 | 8 | 15 |
| 2010 | 7 | 9 |
| 2011 | 7 | 8 |
| 2012 | 6 | 7 |
| 2013 | 4 | 5 |
| 2014 | 11 | 4 |
| 2015 | 4 | 13 |
| 2016 | 9 | 10 |
| 2017 | 9 | 14 |
| 2018 | 8 | 9 |
| 2019 | 11 | 6 |
| 2020 | 9 | 12 |
| 2021 | 11 | 8 |
| 2022 | 5 | 7 |
| 2023 | 3 | 11 |
| 2024 | 5 | 13 |
| 2025 | 11 | 10 |
| 2026 | 3 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Alkylamine composition and method for storing said alkylamine composition21 Jul 2026US 12,686,656 B2Central Glass Company, Limited
- Crystalline form of triethylenetetramine tetrahydrochloride and its pharmaceutical use23 Jun 2026US 12,662,445 B2Orphalan S.A.
- Products obtained by the conversion of glycolaldehyde derivatives and aminating agents and their conversion to ethyleneamines and ethanolamines24 Mar 2026US 12,583,827 B2BASF SE
- Method for making a di(aminoaryl)fluorene compound30 Dec 2025US 12,509,413 B2Cytec Industries Inc.
- Gas-phase process for the conversion of glycolaldehyde with an aminating agent30 Sep 2025US 12,428,383 B2BASF SE
- Method for producing methylamines in the gas phase with improved control of the reactor inlet temperature8 Oct 2026US 2026/0308104 A1BASF SE
- A process for the preparation of crystalline form a of n, n'-bis(2-aminoethyl)-1,2-ethanediamine tetrahydrochloride8 Oct 2026US 2026/0308105 A1Biophore India Pharmaceuticals PVT. Ltd.
- Method for manufacture of ethyleneamines3 Sep 2026US 2026/0257985 A1BASF SE
- Onium cation with ether linkages for zinc batteries20 Aug 2026US 2026/0245979 A1U.S. Government as represented by the Secretary of the Army
- Method for producing diamine and dicarboxylic acid, method for recycling polyamide, and polyamide6 Aug 2026US 2026/0225993 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Method for producing high purity hydroxides and alkoxides33US 5,389,211 ASachem, Inc. · 1995
- Methods for isolating propargylated aminoindans31US 7,491,847 B2Teva Pharmaceutical Industries Ltd. · 2009
- Process and device for recovering amines and use of residues obtainable thereby29US 5,808,159 ATRG Technologie Und Recyclingservice GmbH · 1998
- Method for producing high purity quaternary ammonium hydroxides26US 4,714,530 ASouthwestern Analytical Chemicals, Inc. · 1987
- Sertraline hydrochloride Form II and methods for the preparation thereof21US 6,495,721 B1Teva Pharmaceutical Industries Ltd. · 2002