C07C 209/88
Separation of optical isomers
C07C209/88 (Separation of optical isomers) appears on 51 US grants and 41 published applications in this corpus.
Search patents in C07C- Granted patents
- 51
- Published applications
- 41
- Assignees
- 36
- Inventors
- 181
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 9 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 3 |
| 2014 | 1 | 4 |
| 2015 | 2 | 1 |
| 2016 | 2 | 1 |
| 2017 | 1 | 3 |
| 2018 | 0 | 4 |
| 2019 | 6 | 1 |
| 2020 | 1 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device and method for converting and separating at least one reactant and a reaction product thereof2 Dec 2025US 12,485,400 B2Vito NV
- Methods of synthesis of (1R,2R,5R)-5-amino-2-methyl-cyclohexanol hydrochloride and intermediates useful therein10 Oct 2023US 11,780,801 B2Celgene Corporation
- Methods of synthesis of (1R,2R,5R)-5-amino-2-methylcyclohexanol hydrochloride and intermediates useful therein7 Dec 2021US 11,192,847 B2Celgene Corporation
- Process for preparing an aromatic polyamine mixture8 Jun 2021US 11,028,042 B2BASF SE
- Methods of synthesis of (1R, 2R, 5R)-5-amino-2-methylcyclohexanol hydrochloride and intermediates useful therein15 Sep 2020US 10,774,033 B2Celgene Corporation
- Amine separation method5 Mar 2026US 2026/0062375 A1Daicel Corporation
- Process for the production of (1r,2s)-2,6-dimethyl-1-indanamine using dynamic kinetic stereoisomer resolution26 Feb 2026US 2026/0055048 A1Bayer Aktiengesellschaft
- Method for manufacture of isophoronediamine2 Oct 2025US 2025/0304525 A1BASF SE
- Process to produce (1r,4r)-4-substituted cyclohexane-1-amines17 Apr 2025US 2025/0122542 A1Budapesti Muszaki Es Gazdasagtudomanyi Egyetem
- Method for producing optically active compound17 Aug 2023US 2023/0257408 A1Sumitomo Chemical Company, Limited
Most cited
By later US patents
- Compositions containing and methods of using 1-aminoindan and derivatives thereof and process for preparing optically active 1-aminoindan derivatives68US 5,877,218 ATeva Pharmaceutical Industries Ltd. · 1999
- Enantiomeric resolution32US 5,442,117 AAlbemarle Corporation · 1995
- Compositions containing and methods of using 1-aminoindan and derivatives thereof and process for preparing optically active 1-aminoindan derivatives32US 5,914,349 ATeva Pharmaceutical Industries Ltd. · 1999
- Compositions containing and methods of using 1-aminoindan and derivatives thereof and process for preparing optically active 1-aminoindan derivatives31US 5,877,221 ATechnion Research & Development Foundation Limited · 1999
- Compositions containing and methods of using 1-aminoindan and derivatives thereof and process for preparing optically active 1-aminoindan derivatives29US 5,880,159 ATechnion Research & Development Foundation Limited · 1999