C07C 227/42
Crystallisation
C07C227/42 (Crystallisation) appears on 153 US grants and 168 published applications in this corpus.
Search patents in C07C- Granted patents
- 153
- Published applications
- 168
- Assignees
- 117
- Inventors
- 496
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 7 |
| 2004 | 4 | 6 |
| 2005 | 3 | 7 |
| 2006 | 6 | 7 |
| 2007 | 2 | 1 |
| 2008 | 6 | 1 |
| 2009 | 2 | 6 |
| 2010 | 1 | 7 |
| 2011 | 2 | 5 |
| 2012 | 4 | 9 |
| 2013 | 6 | 7 |
| 2014 | 8 | 12 |
| 2015 | 8 | 10 |
| 2016 | 14 | 4 |
| 2017 | 10 | 8 |
| 2018 | 8 | 8 |
| 2019 | 10 | 9 |
| 2020 | 4 | 6 |
| 2021 | 7 | 7 |
| 2022 | 0 | 3 |
| 2023 | 1 | 7 |
| 2024 | 1 | 14 |
| 2025 | 2 | 7 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for isolating 2-(4'-diethylamino-2'-hydroxybenzoyl)benzoic acid hexyl ester25 Aug 2026US 12,715,837 B2BASF SE
- Crystalline form of L-serine and process of preparing same21 Apr 2026US 12,606,518 B2Astrogen, Inc.
- Refining method31 Mar 2026US 12,590,075 B2NGK Insulators, Ltd.
- L-ornithine phenyl acetate and methods of making thereof6 Jan 2026US 12,516,015 B2Amalive Limited
- Branched-chain amino acid crystallization method capable of sustainably cycling ammonia4 Nov 2025US 12,459,886 B2Cj Cheiljedang Corporation
- Method for obtaining organic acids from an aqueous mother liquor10 Sep 2026US 2026/0265175 A1Covestro Deutschland AG
- Method for obtaining crystalline diethylamino hydroxybenzoyl hexyl benzoate27 Aug 2026US 2026/0250238 A1BASF SE
- Process for isolating 2-(4'-diethylamino-2'-hydroxybenzoyl)benzoic acid hexyl ester6 Aug 2026US 2026/0225996 A1BASF SE
- Method for producing tyrosine from fermented broth11 Jun 2026US 2026/0159863 A1Cj Cheiljedang Corporation
- Method for Purifying Pregabalin14 May 2026US 2026/0132100 A1Zhejiang Huahai Pharmaceutical Co., Ltd.
Most cited
By later US patents
- Crystalline salts of dodecyl 2-(N,N-dimethylamino)-propionate34US 6,118,020 ANexmed Holdings, Inc. · 2000
- L-ornithine phenyl acetate and methods of making thereof33US 8,173,706 B2Ocera Therapeutics, Inc. · 2012
- L-ornithine phenyl acetate and methods of making thereof31US 8,492,439 B2Ocera Therapeutics, Inc. · 2013
- L-ornithine phenyl acetate and methods of making thereof29US 8,785,498 B2Ocera Therapeutics, Inc. · 2014
- L-ornithine phenyl acetate and methods of making thereof28US 9,034,925 B2Ocera Therapeutics, Inc. · 2015