C07C 231/20
By separation of optical isomers
Official title: by separation of optical isomers
C07C231/20 (By separation of optical isomers) appears on 51 US grants and 43 published applications in this corpus.
Search patents in C07C- Granted patents
- 51
- Published applications
- 43
- Assignees
- 42
- Inventors
- 156
- Latest grant
- 1 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 6 |
| 2008 | 1 | 1 |
| 2009 | 2 | 4 |
| 2010 | 2 | 4 |
| 2011 | 0 | 2 |
| 2012 | 4 | 5 |
| 2013 | 4 | 3 |
| 2014 | 3 | 1 |
| 2015 | 3 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 3 |
| 2022 | 1 | 3 |
| 2023 | 3 | 2 |
| 2024 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Composition of acylethanolamides from olive oil fatty acids1 Oct 2024US 12,102,608 B2Epitech Group S.r.l.
- Chiral resolution method mimicking magnetic beneficiation and the magnetic nano-inhibitors for selective enrichment1 Oct 2024US 12,104,022 B2Peking University
- Process for preparing 2-methyl-N-(2′-methylbutyl)butanamide30 Apr 2024US 11,970,432 B2Shin-Etsu Chemical Co., Ltd.
- Process for preparing 2-methyl-N-(2′-methylbutyl)butanamide18 Apr 2023US 11,629,119 B2Shin-Etsu Chemical Co., Ltd.
- Method for producing lacosamide and intermediate thereof11 Apr 2023US 11,623,943 B2Api Corporation
- Process for preparing 2-methyl-n-(2' -methylbutyl)butanamide29 Jun 2023US 2023/0202968 A1Shin-Etsu Chemical Co., Ltd.
- Process for the synthesis of s-beflubutamid using asymmetric hydrogenation30 Mar 2023US 2023/0099631 A1Cheminova A/S
- Process for preparing 2-methyl-n-(2' -methylbutyl)butanamide29 Dec 2022US 2022/0411363 A1Shin-Etsu Chemical Co., Ltd.
- Composition of acylethanolamides from olive oil fatty acids1 Dec 2022US 2022/0378725 A1Epitech Group S.r.l.
- Enantioselective synthesis of brivaracetam and intermediates thereof3 Mar 2022US 2022/0064111 A1Clininvent Research Pvt. Ltd.
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
- 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
- Compositions containing and methods of using 1-aminoindan and derivatives thereof and process for preparing optically active 1-aminoindan derivatives29US 5,994,408 ATechnion Research & Development Foundation Limited · 1999