C07B 57/00
Separation of optically-active compounds
C07B57/00 (Separation of optically-active compounds) appears on 442 US grants and 352 published applications in this corpus.
Search patents in C07B- Granted patents
- 442
- Published applications
- 352
- Assignees
- 310
- Inventors
- 1,197
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 10 | 0 |
| 1993 | 21 | 0 |
| 1994 | 20 | 0 |
| 1995 | 16 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 16 | 0 |
| 1999 | 13 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 2 |
| 2002 | 16 | 8 |
| 2003 | 12 | 10 |
| 2004 | 10 | 17 |
| 2005 | 5 | 12 |
| 2006 | 9 | 7 |
| 2007 | 9 | 11 |
| 2008 | 7 | 15 |
| 2009 | 3 | 17 |
| 2010 | 14 | 21 |
| 2011 | 13 | 22 |
| 2012 | 10 | 14 |
| 2013 | 13 | 18 |
| 2014 | 16 | 20 |
| 2015 | 11 | 10 |
| 2016 | 12 | 10 |
| 2017 | 16 | 25 |
| 2018 | 11 | 22 |
| 2019 | 17 | 26 |
| 2020 | 21 | 19 |
| 2021 | 10 | 13 |
| 2022 | 10 | 8 |
| 2023 | 5 | 5 |
| 2024 | 3 | 5 |
| 2025 | 6 | 10 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation of optically active enantiomers of piperonyl amines by resolution of the diastereomeric salts25 Aug 2026US 12,715,852 B2EmpathBio, Inc.
- Synthesis of key intermediate of KRAS G12C inhibitor compound28 Jul 2026US 12,692,266 B2Amgen Inc.
- Process for producing 4,5-dihydro-1H-pyrazoles and intermediates7 Apr 2026US 12,595,235 B2Novo Nordisk A/S
- Method for preparing brivaracetam and intermediate thereof6 Jan 2026US 12,516,021 B2Shanghai Syncores Technologies Inc. Ltd.
- Synthesis of key intermediate of KRAS G12C inhibitor compound19 Aug 2025US 12,391,689 B2Amgen Inc.
- Chiral separation systems and methods21 May 2026US 2026/0138140 A1Chirality Biosciences, Inc.
- Preparation of phenethylamines and cathinones and stereoisomers thereof and precursors thereof21 May 2026US 2026/0138964 A1Transcend Therapeutics, Inc.
- Amine separation method5 Mar 2026US 2026/0062375 A1Daicel Corporation
- Enantiomeric enrichment of l-lactic acid or salt thereof26 Feb 2026US 2026/0055044 A1TripleW Ltd.
- Method for producing triazole derivative enantiomer (r)15 Jan 2026US 2026/0015329 A1Kureha Corporation
Most cited
By later US patents
- Supports useful for molecular imprinting technology247US 5,959,050 A1999
- Amide containing molecular imprinted polymers198US 6,274,686 B12001
- Molecularly imprinted beaded polymers and stabilized suspension polymerization of the same in perfluorocarbon liquids96US 5,872,198 A1999
- Stereoselective ring opening reactions72US 5,929,232 APresident and Fellows of Harvard College · 1999
- Stereoselective ring opening reactions66US 5,665,890 APresident and Fellows of Harvard College · 1997