C07C 271/20
To carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being
Official title: to carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being part of nitro or nitroso groups
C07C271/20 (To carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being) appears on 641 US grants and 510 published applications in this corpus.
Search patents in C07C- Granted patents
- 641
- Published applications
- 510
- Assignees
- 350
- Inventors
- 1,693
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 10 | 0 |
| 1991 | 12 | 0 |
| 1992 | 13 | 0 |
| 1993 | 14 | 0 |
| 1994 | 13 | 0 |
| 1995 | 16 | 0 |
| 1996 | 40 | 0 |
| 1997 | 49 | 0 |
| 1998 | 25 | 0 |
| 1999 | 15 | 0 |
| 2000 | 18 | 0 |
| 2001 | 21 | 7 |
| 2002 | 21 | 14 |
| 2003 | 23 | 25 |
| 2004 | 12 | 32 |
| 2005 | 13 | 23 |
| 2006 | 17 | 22 |
| 2007 | 14 | 17 |
| 2008 | 14 | 17 |
| 2009 | 10 | 17 |
| 2010 | 13 | 14 |
| 2011 | 6 | 9 |
| 2012 | 18 | 18 |
| 2013 | 11 | 15 |
| 2014 | 13 | 25 |
| 2015 | 15 | 25 |
| 2016 | 21 | 23 |
| 2017 | 22 | 25 |
| 2018 | 26 | 21 |
| 2019 | 19 | 16 |
| 2020 | 10 | 19 |
| 2021 | 11 | 16 |
| 2022 | 14 | 25 |
| 2023 | 11 | 21 |
| 2024 | 14 | 19 |
| 2025 | 17 | 28 |
| 2026 | 7 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ionizable cationic lipids for RNA delivery1 Sep 2026US 12,723,023 B2Arcturus Therapeutics, Inc.
- Nitrogen-branched non-linear pegylated lipid containing a tertiary amine and application thereof18 Aug 2026US 12,708,675 B2Xiamen Sinopeg Biotech Co., Ltd.
- Cationic lipids and preparation method thereof28 Jul 2026US 12,691,070 B2RiboX Therapeutics HK Limited
- Valiolamine derivatives as glucosidase inhibitors7 Jul 2026US 12,673,924 B2Emergent Product Development Gaithersburg Inc.
- Cationic lipid, liposome containing cationic lipid, and nucleic-acid pharmaceutical composition containing liposome and formulation and application thereof9 Jun 2026US 12,648,908 B2Xiamen Sinopeg Biotech Co., Ltd.
- Ionizable lipid compound, lipid carrier comprising same, and application1 Oct 2026US 2026/0294810 A1Innovec Biotherapeutics
- Lipid nanoparticle for targeted delivery of therapeutic payloads24 Sep 2026US 2026/0285801 A1Trustees of Tufts College
- Lipid compounds, compositions, and uses thereof20 Aug 2026US 2026/0242346 A1Liberate Bio, Inc.
- Hole-selective contact material, photoelectric conversion device and polycyclic aromatic hydrocarbon compound20 Aug 2026US 2026/0247781 A1Okinawa Institute of Science and Technology School Corporation
- Novel lipids and compositions for the delivery of therapeutics13 Aug 2026US 2026/0232810 A1Arbutus Biopharma Corporation
Most cited
By later US patents
- Novel vinyl carbonate and vinyl carbamate contact lens material monomers474US 5,070,215 ABausch & Lomb Incorporated · 1991
- Methods for identifying RNA binding compounds220US 6,503,713 B1University of Medicine and Dentistry of New Jersey · 2003
- Drug composition containing nucleic acid copolymer208US 5,705,188 ANippon Shinyaku Co., Ltd. · 1998
- Vinyl carbonate and vinyl carbamate contact lens material monomers193US 5,610,252 ABausch & Lomb Incorporated · 1997
- Retroviral protease inhibiting compounds159US 5,142,056 AAbbott Laboratories · 1992