C07B 43/00
Formation or introduction of functional groups containing nitrogen
C07B43/00 (Formation or introduction of functional groups containing nitrogen) appears on 262 US grants and 238 published applications in this corpus.
Search patents in C07B- Granted patents
- 262
- Published applications
- 238
- Assignees
- 213
- Inventors
- 808
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 0 |
| 2002 | 11 | 3 |
| 2003 | 5 | 1 |
| 2004 | 3 | 9 |
| 2005 | 5 | 8 |
| 2006 | 6 | 6 |
| 2007 | 4 | 3 |
| 2008 | 5 | 4 |
| 2009 | 5 | 6 |
| 2010 | 2 | 8 |
| 2011 | 1 | 6 |
| 2012 | 4 | 8 |
| 2013 | 7 | 10 |
| 2014 | 6 | 9 |
| 2015 | 13 | 10 |
| 2016 | 10 | 11 |
| 2017 | 9 | 14 |
| 2018 | 13 | 35 |
| 2019 | 22 | 14 |
| 2020 | 18 | 17 |
| 2021 | 17 | 17 |
| 2022 | 10 | 5 |
| 2023 | 6 | 6 |
| 2024 | 7 | 10 |
| 2025 | 3 | 10 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07B 43/04Formation or introduction of functional groups containing nitrogen: of amino groups122
- C07B 43/06Formation or introduction of functional groups containing nitrogen: of amide groups53
- C07B 43/02Formation or introduction of functional groups containing nitrogen: of nitro or nitroso46
- C07B 43/08Formation or introduction of functional groups containing nitrogen: of cyano groups24
- C07B 43/10Formation or introduction of functional groups containing nitrogen: of isocyanate groups1
Recent patents
- Beta-lactam compounds and methods of use thereof12 May 2026US 12,624,382 B2The University of Hong Kong
- Air-stable ni(0)-olefin complexes and their use as catalysts or precatalysts24 Feb 2026US 12,558,677 B2Studiengesellschaft Kohle mbH
- Arsenic-containing ligands, catalytic compositions containing such ligands, and catalytic processes utilizing such catalytic compositions13 Jan 2026US 12,521,703 B1INV Nylon Chemicals Americas, LLC
- Ylide-functionalised phosphanes for use in metal complexes and homogeneous catalysis13 Jan 2026US 12,521,704 B2Umicore AG & Co. KG
- Nitrosation reagents and methods4 Nov 2025US 12,459,909 B2The Regents of the University of California
- Heterocyclic carboxylic acid hydrazide ligand and use thereof in copper-catalyzed aryl halide coupling reaction8 Oct 2026US 2026/0308125 A1Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences
- Visible light driven co2 valorization6 Aug 2026US 2026/0225999 A1The Board of Regents for the Oklahoma Agricultural and Mechanical Colleges
- Method for preparing amides from esters7 May 2026US 2026/0125340 A1BASF SE
- Ylide-functionalized phosphanes for use in metal complexes and homogeneous catalysis30 Apr 2026US 2026/0115706 A1Umicore AG & Co. KG
- Nitrosation Reagents and Methods9 Apr 2026US 2026/0098021 A1
Most cited
By later US patents
- Methods and apparatus for synthesizing labeled combinatorial chemistrylibraries138US 5,770,455 AOntogen Corporation · 1998
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds78US 6,759,554 B2Massachusetts Institute of Technology · 2004
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds72US 6,867,298 B2Massachusetts Institute of Technology · 2005
- Methods and apparatus for synthesizing labeled combinatorial chemistry libraries62US 6,087,186 AIrori · 2000
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds62US 7,115,784 B2Massachusetts Institute of Technology · 2006