C12P 41/006
Processes using enzymes or microorganisms to separate optical isomers from a racemic
Official title: {by reactions involving C-N bonds, e.g. nitriles, amides, hydantoins, carbamates, lactames, transamination reactions, or keto group formation from racemic mixtures}
C12P41/006 (Processes using enzymes or microorganisms to separate optical isomers from a racemic) appears on 311 US grants and 237 published applications in this corpus.
Search patents in C12P- Granted patents
- 311
- Published applications
- 237
- Assignees
- 159
- Inventors
- 753
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 12 | 0 |
| 1994 | 12 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 16 | 0 |
| 1999 | 10 | 0 |
| 2000 | 11 | 0 |
| 2001 | 15 | 4 |
| 2002 | 20 | 19 |
| 2003 | 10 | 19 |
| 2004 | 14 | 18 |
| 2005 | 6 | 11 |
| 2006 | 11 | 22 |
| 2007 | 15 | 17 |
| 2008 | 16 | 6 |
| 2009 | 5 | 10 |
| 2010 | 9 | 18 |
| 2011 | 8 | 10 |
| 2012 | 7 | 6 |
| 2013 | 7 | 16 |
| 2014 | 5 | 7 |
| 2015 | 10 | 5 |
| 2016 | 9 | 7 |
| 2017 | 5 | 4 |
| 2018 | 3 | 4 |
| 2019 | 4 | 5 |
| 2020 | 6 | 2 |
| 2021 | 2 | 4 |
| 2022 | 1 | 3 |
| 2023 | 2 | 4 |
| 2024 | 3 | 5 |
| 2025 | 4 | 8 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Transaminase polypeptides21 Oct 2025US 12,448,611 B2Codexis, Inc.
- Transaminase mutant and use thereof9 Sep 2025US 12,410,413 B2Asymchem Laboratories (Tianjin) Co., Ltd.
- Production method for L-cyclic amino acids8 Apr 2025US 12,270,060 B2Ube Corporation
- Method for resolving optical isomer by using supercritical fluid extraction technology7 Jan 2025US 12,188,066 B2Guang An Mojia Biotechnology Co., Ltd.
- Modified DAAO enzyme and application thereof31 Dec 2024US 12,180,514 B2Hunan Lier Biotech Co., Ltd
- Process for the reduction of aromatic imines with novel imine reductases (ireds)21 May 2026US 2026/0139283 A1
- Process for the production of (1r,2s)-2,6-dimethyl-1-indanamine using dynamic kinetic stereoisomer resolution26 Feb 2026US 2026/0055048 A1Bayer Aktiengesellschaft
- Transaminase polypeptides29 Jan 2026US 2026/0028600 A1Codexis, Inc.
- Omega-transaminase mutant and application thereof9 Oct 2025US 2025/0313814 A1Zhejiang University of Technology
- Method for enzymatic synthesis of brivaracetam chiral intermediate28 Aug 2025US 2025/0270601 A1Zhejiang University of Technology
Most cited
By later US patents
- Delivery of multiple doses of medications377US 5,837,284 A1998
- Phosphinothricin-resistance gene, and its use176US 5,276,268 AHoechst Aktiengesellschaft · 1994
- Phosphinothricin-resistance gene, and its use142US 5,879,903 AHoechst Aktiengesellschaft · 1999
- Phenidate drug formulations having diminished abuse potential107US 6,355,656 B1Celgene Corporation · 2002
- Phosphinothricin-resistance gene, and its use92US 5,273,894 AHoechst Aktiengesellschaft · 1993