C07D 295/023
Preparation
Official title: Preparation; Separation; Stabilisation; Use of additives
C07D295/023 (Preparation) appears on 302 US grants and 133 published applications in this corpus.
Search patents in C07D- Granted patents
- 302
- Published applications
- 133
- Assignees
- 131
- Inventors
- 631
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 12 | 0 |
| 1979 | 1 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 12 | 0 |
| 1989 | 7 | 0 |
| 1990 | 19 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 5 |
| 2002 | 15 | 5 |
| 2003 | 9 | 4 |
| 2004 | 3 | 12 |
| 2005 | 8 | 4 |
| 2006 | 6 | 6 |
| 2007 | 5 | 4 |
| 2008 | 3 | 8 |
| 2009 | 4 | 11 |
| 2010 | 3 | 11 |
| 2011 | 7 | 0 |
| 2012 | 7 | 4 |
| 2013 | 0 | 7 |
| 2014 | 2 | 5 |
| 2015 | 9 | 3 |
| 2016 | 2 | 5 |
| 2017 | 5 | 7 |
| 2018 | 2 | 4 |
| 2019 | 3 | 4 |
| 2020 | 10 | 8 |
| 2021 | 2 | 2 |
| 2022 | 3 | 3 |
| 2023 | 2 | 1 |
| 2024 | 0 | 4 |
| 2025 | 3 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for introducing deuterated lower alkyl into amine moiety of compound containing secondary amine19 May 2026US 12,630,487 B2Otsuka Pharmaceutical Co., Ltd.
- Method of preparing ionic fluids21 Oct 2025US 12,448,351 B2Tetra Technologies, Inc.
- Hydrogenation reaction catalyst used to hydrogenate amide compound and method for producing amine compound using same4 Mar 2025US 12,239,961 B2N. E. Chemcat Corporation
- Hydrogenation catalyst used in amide compound hydrogenation and method for producing amine compound using same7 Jan 2025US 12,187,691 B2N. E. Chemcat Corporation
- Method of preparing ionic fluids28 Nov 2023US 11,827,599 B1Tetra Technologies, Inc.
- Cobalt-catalyzed carbonylative alkene hydrofunctionalizations promoted by visible light8 Oct 2026US 2026/0308103 A1
- Process for the production of a co-mixture of piperazine and methyl-substituted piperazine25 Jun 2026US 2026/0176241 A1Uop LLC
- Method of preparing ionic fluids14 May 2026US 2026/0132107 A1Tetra Technologies, Inc.
- Method for producing amines29 Jan 2026US 2026/0028303 A1Consejo Superior De Investigaciones Cientificas (Csic)
- Synthetic intermediates and improved processes for preparing ROCk inhibitors3 Apr 2025US 2025/0109106 A1Alcon Inc.
Most cited
By later US patents
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Ligands for metals and improved metal-catalyzed processes based thereon100US 6,395,916 B1Massachusetts Institute of Technology · 2002
- Ligands for metals and improved metal-catalyzed processes based thereon93US 7,223,879 B2Massachusetts Institute of Technology · 2007
- Ligands for metals and improved metal-catalyzed processes based thereon83US 6,946,560 B2Massachusetts Institute of Technology · 2005
- Substituted aminomethylphosphines, compositions and coordination complexes of same, their synthesis and processes using same82US 6,043,363 ASymyx Technologies, Inc. · 2000