C12P 19/40
Having a condensed ring system containing a six-membered ring having two nitrogen
Official title: having a condensed ring system containing a six-membered ring having two nitrogen atoms in the same ring, e.g. purine nucleosides
C12P19/40 (Having a condensed ring system containing a six-membered ring having two nitrogen) appears on 115 US grants and 117 published applications in this corpus.
Search patents in C12P- Granted patents
- 115
- Published applications
- 117
- Assignees
- 91
- Inventors
- 440
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 7 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 4 |
| 2003 | 1 | 3 |
| 2004 | 1 | 5 |
| 2005 | 3 | 5 |
| 2006 | 4 | 7 |
| 2007 | 4 | 4 |
| 2008 | 6 | 4 |
| 2009 | 2 | 7 |
| 2010 | 2 | 7 |
| 2011 | 2 | 7 |
| 2012 | 6 | 2 |
| 2013 | 5 | 6 |
| 2014 | 1 | 3 |
| 2015 | 3 | 4 |
| 2016 | 2 | 5 |
| 2017 | 4 | 3 |
| 2018 | 4 | 2 |
| 2019 | 2 | 3 |
| 2020 | 2 | 5 |
| 2021 | 2 | 3 |
| 2022 | 1 | 5 |
| 2023 | 2 | 5 |
| 2024 | 4 | 7 |
| 2025 | 5 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for manipulating biomolecules30 Jun 2026US 12,668,825 B2Life Technologies Corporation
- Selection and use of melatonin supporting bacteria to reduce infantile colic2 Jun 2026US 12,642,830 B2Biogaia AB
- Method for efficient catalytic synthesis of PAPS based on constructing ATP regeneration system24 Feb 2026US 12,559,780 B2Jiangnan University
- Engineered sucrose phosphorylase variant enzymes25 Nov 2025US 12,480,104 B2Codexis, Inc.
- Phosphoenolpyruvate carboxylase variant and method for producing 5à ¢â,¬â,,¢-inosinic acid using same9 Sep 2025US 12,410,455 B2Daesang Corporation
- Method for Enzymatic Synthesis of Nucleoside Bearing Protecting Group, and Composition27 Aug 2026US 2026/0250734 A1Asymchem Life Science (Tianjin) Co., Ltd
- Method for one-pot biosynthesis of arabinonucleoside, and composition28 May 2026US 2026/0146273 A1Asymchem Life Science (Tianjin) Co., Ltd
- Enzyme immobilization carrier and preparation method therefor, immobilized enzyme and preparation method therefor, and use thereof7 May 2026US 2026/0125667 A1Asymchem Laboratories (Fuxin) Co., Ltd.
- Engineered sucrose phosphorylase variant enzymes5 Feb 2026US 2026/0035675 A1Codexis, Inc.
- Thermostable glycosyltransferase variants25 Dec 2025US 2025/0388945 A1
Most cited
By later US patents
- 1,3-oxathiolane nucleoside compounds and compositions53US 5,538,975 ABioChem Pharma Inc. · 1996
- 1,3-oxathiolane nucleoside analogues and methods for using same42US 5,618,820 ABioChem Pharma Inc. · 1997
- Double salts of S-adenosil-L-methionine31US 3,954,726 ABioResearch Inc. · 1976
- Microorganisms for the production of 1,4-butanediol, 4-hydroxybutanal, 4-hydroxybutyryl-coa, putrescine and related compounds, and methods related thereto31US 8,377,666 B2Genomatica, Inc. · 2013
- Dideoxyinosine by enzymatic deamination of dideoxyadenosine22US 5,011,774 ABristol-Myers Squibb Company · 1991