B01J 2531/0238
Complexes comprising multidentate ligands, i.e. more than 2 ionic or coordinative bonds
Official title: Complexes comprising multidentate ligands, i.e. more than 2 ionic or coordinative bonds from the central metal to the ligand, the latter having at least two donor atoms, e.g. N, O, S, P
B01J2531/0238 (Complexes comprising multidentate ligands, i.e. more than 2 ionic or coordinative bonds) appears on 804 US grants and 756 published applications in this corpus.
Search patents in B01J- Granted patents
- 804
- Published applications
- 756
- Assignees
- 451
- Inventors
- 2,095
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 13 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 15 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 15 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 12 | 0 |
| 1996 | 16 | 0 |
| 1997 | 16 | 0 |
| 1998 | 20 | 0 |
| 1999 | 17 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 3 |
| 2002 | 13 | 12 |
| 2003 | 12 | 23 |
| 2004 | 15 | 25 |
| 2005 | 12 | 24 |
| 2006 | 17 | 20 |
| 2007 | 17 | 16 |
| 2008 | 13 | 23 |
| 2009 | 16 | 26 |
| 2010 | 16 | 35 |
| 2011 | 17 | 34 |
| 2012 | 19 | 26 |
| 2013 | 21 | 38 |
| 2014 | 26 | 37 |
| 2015 | 33 | 36 |
| 2016 | 37 | 33 |
| 2017 | 34 | 33 |
| 2018 | 19 | 30 |
| 2019 | 32 | 64 |
| 2020 | 39 | 44 |
| 2021 | 42 | 41 |
| 2022 | 31 | 38 |
| 2023 | 36 | 25 |
| 2024 | 17 | 31 |
| 2025 | 19 | 26 |
| 2026 | 7 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ferrocene-based unsymmetrical ligands bearing bulky di(adamantyl)phosphino motif and their metal catalysts8 Sep 2026US 12,729,216 B2Sigma-Aldrich Co.
- Oxidized polyethylene compounds and methods of making the same18 Aug 2026US 12,709,680 B2The Regents of the University of California
- Porphyrin-based metal coordination conjugated polymer, preparation method therefor, and application thereof in photocatalytic degradation of organic pollutants26 May 2026US 12,636,642 B2Soochow University
- Metal organic framework and use thereof for generating H25 May 2026US 12,616,966 B2Centre National De La Recherche Scientifique
- Formate production method, formic acid production method, and antifreezing agent production method21 Apr 2026US 12,606,513 B2Nitto Denko Corporation
- Selective olefin oligomerization with transition metal amine bis(phenolate) catalysts8 Oct 2026US 2026/0308083 A1Chevron Phillips Chemical Company LP
- Catalyst for sp3-carbon-hydrogen-bond primary amination reaction, and method for preparing primary amine compound13 Aug 2026US 2026/0234096 A1West China Second University Hospital, Sichuan University
- Ammonia synthesis catalyst, ammonia production device, and ammonia production method6 Aug 2026US 2026/0225088 A1Idemitsu Kosan Co., Ltd.
- Method for producing nitrogenated compound6 Aug 2026US 2026/0226088 A1Idemitsu Kosan Co., Ltd.
- Catalyst system and method for carbonylation reaction23 Jul 2026US 2026/0208174 A1Shandong Nhu Fine Chemical Science and Technology Company Ltd.
Most cited
By later US patents
- Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers410US 4,784,736 ABend Research, Inc. · 1988
- Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers370US 4,917,800 ABend Research, Inc. · 1990
- Method of expanded porphyrin-oligonucleotide conjugate synthesis325US 5,565,552 ABoard of Regents, Univ. of Texas Sys. · 1996
- Texaphyrin-oligonucleotide conjugates308US 5,587,371 ABoard of Trustees, Univ. of TX Sys. · 1996
- Chromophore probe for detection of nucleic acid221US 5,595,726 ABoard of Trustees, Univ. of TX Sys. · 1997