C12P 41/003
Processes using enzymes or microorganisms to separate optical isomers from a racemic
Official title: {by ester formation, lactone formation or the inverse reactions}
C12P41/003 (Processes using enzymes or microorganisms to separate optical isomers from a racemic) appears on 503 US grants and 257 published applications in this corpus.
Search patents in C12P- Granted patents
- 503
- Published applications
- 257
- Assignees
- 255
- Inventors
- 1,203
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 11 | 0 |
| 1990 | 14 | 0 |
| 1991 | 18 | 0 |
| 1992 | 22 | 0 |
| 1993 | 37 | 0 |
| 1994 | 26 | 0 |
| 1995 | 27 | 0 |
| 1996 | 28 | 0 |
| 1997 | 23 | 0 |
| 1998 | 23 | 0 |
| 1999 | 18 | 0 |
| 2000 | 16 | 0 |
| 2001 | 24 | 7 |
| 2002 | 18 | 15 |
| 2003 | 14 | 23 |
| 2004 | 9 | 30 |
| 2005 | 12 | 19 |
| 2006 | 21 | 20 |
| 2007 | 10 | 13 |
| 2008 | 11 | 12 |
| 2009 | 5 | 21 |
| 2010 | 9 | 16 |
| 2011 | 15 | 6 |
| 2012 | 14 | 7 |
| 2013 | 5 | 8 |
| 2014 | 7 | 8 |
| 2015 | 9 | 6 |
| 2016 | 6 | 3 |
| 2017 | 4 | 3 |
| 2018 | 5 | 5 |
| 2019 | 5 | 2 |
| 2020 | 1 | 6 |
| 2021 | 4 | 4 |
| 2022 | 2 | 6 |
| 2023 | 2 | 4 |
| 2024 | 3 | 9 |
| 2025 | 6 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polypeptide having esterification activity for L-menthol and/or hydrolyzing activity for L-menthol ester19 May 2026US 12,630,855 B2Amano Enzyme Inc.
- Esterase mutant and use thereof6 Jan 2026US 12,516,303 B2Asymchem Life Science (Tianjin) Co., Ltd
- Lipase mutant and use thereof30 Dec 2025US 12,509,708 B2Asymchem Life Science (Tianjin) Co., Ltd
- Processes and intermediates for the preparation of carbaprostacyclin analogues30 Sep 2025US 12,428,361 B2Chirogate International Inc.
- Method for enzymatic resolution of chiral substances3 Jun 2025US 12,319,952 B2South China University of Technology
- Novel Esterase Mutants And Uses Thereof As Stereoselective Catalyst24 Sep 2026US 2026/0286323 A1Endura S. P. A.
- Lipase with improved stereoselectivity and lipase-based chiral resolution methods3 Sep 2026US 2026/0258381 A1
- Method for preparing (r)-ketorolac and use thereof5 Feb 2026US 2026/0035372 A1Yinuoke Medicine Science and Technology Co LTD
- Processes and intermediates for the preparation of carbaprostacyclin analogues2 Oct 2025US 2025/0304519 A1Chirogate International Inc.
- Lipase mutant and application thereof5 Dec 2024US 2024/0401091 A1Asymchem Life Science (Tianjin) Co., Ltd
Most cited
By later US patents
- Plant viral vectors having heterologous subgenomic promoters for systemic expression of foreign genes185US 5,316,931 ABiosource Genetics Corporation · 1994
- Hepatitis C inhibitor tri-peptides134US 6,323,180 B1Boehringer Ingelheim (Canada) Ltd. · 2001
- Hepatitis C inhibitor tri-peptides118US 6,534,523 B1Boehringer Ingelheim (Canada) Ltd. · 2003
- Hepatitis C inhibitor tri-peptides111US 6,420,380 B2Boehringer Ingelheim (Canada) Ltd. · 2002
- Hepatitis C inhibitor tri-peptides110US 6,410,531 B1Boehringer Ingelheim (Canada) Ltd. · 2002