B01J 31/2243
At least one oxygen and one nitrogen atom present as complexing atoms
Official title: {At least one oxygen and one nitrogen atom present as complexing atoms in an at least bidentate or bridging ligand}
B01J31/2243 (At least one oxygen and one nitrogen atom present as complexing atoms) appears on 303 US grants and 314 published applications in this corpus.
Search patents in B01J- Granted patents
- 303
- Published applications
- 314
- Assignees
- 225
- Inventors
- 883
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 10 | 2 |
| 2002 | 9 | 10 |
| 2003 | 14 | 18 |
| 2004 | 9 | 15 |
| 2005 | 15 | 19 |
| 2006 | 11 | 12 |
| 2007 | 8 | 6 |
| 2008 | 7 | 5 |
| 2009 | 2 | 12 |
| 2010 | 11 | 9 |
| 2011 | 5 | 11 |
| 2012 | 6 | 10 |
| 2013 | 5 | 11 |
| 2014 | 7 | 18 |
| 2015 | 16 | 15 |
| 2016 | 14 | 11 |
| 2017 | 8 | 12 |
| 2018 | 6 | 7 |
| 2019 | 8 | 15 |
| 2020 | 12 | 15 |
| 2021 | 10 | 25 |
| 2022 | 18 | 20 |
| 2023 | 17 | 8 |
| 2024 | 14 | 16 |
| 2025 | 7 | 7 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reduction by a silane in the presence of Zinc catalyst28 Jul 2026US 12,692,213 B2Firmenich SA
- Metal organic framework and use thereof for generating H25 May 2026US 12,616,966 B2Centre National De La Recherche Scientifique
- Ionic solid27 Jan 2026US 12,534,489 B2Japan Science and Technology Agency
- Metal-metal bonded ammonia oxidation catalysts6 Jan 2026US 12,515,207 B2Wisconsin Alumni Research Foundation
- Catalysts for synthesizing cyclic carbonates, preparation methods and uses thereof23 Dec 2025US 12,502,661 B2Anhui Conch Material Technology Co., Ltd.
- Ammonia synthesis catalyst, ammonia production device, and ammonia production method6 Aug 2026US 2026/0225088 A1Idemitsu Kosan Co., Ltd.
- Process for preparing allylic alcohol6 Aug 2026US 2026/0225981 A1
- Ethylene production method, carbon dioxide reduction electrode, and carbon dioxide reduction apparatus6 Aug 2026US 2026/0226632 A1Sumitomo Chemical Company, Limited
- Novel Carbonylation Catalysts And Methods Of Making The Same7 May 2026US 2026/0125402 A1Novomer, Inc.
- Preparation Method and Application of Imidazole-Functionalized Metal-Organic Framework Material Im RE-MOF With Lipase-Mimetic Catalytic Activity30 Apr 2026US 2026/0116898 A1Jiangnan University
Most cited
By later US patents
- Chiral catalysts and catalytic epoxidation catalyzed thereby74US 5,637,739 AResearch Corporation Technologies, Inc. · 1997
- Catalytic carbonylation of three and four membered heterocycles68US 6,852,865 B2Cornell Research Foundation, Inc. · 2005
- Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water65US 6,284,852 B1California Institute of Technology · 2001
- Chiral catalysts and epoxidation reactions58US 5,663,393 AResearch Corporation Technologies, Inc. · 1997
- Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom55US 6,869,904 B2Symyx Technologies, Inc. · 2005