B01J 31/2226
Anionic ligands, i.e. the overall ligand carries at least one formal negative
Official title: {Anionic ligands, i.e. the overall ligand carries at least one formal negative charge}
B01J31/2226 (Anionic ligands, i.e. the overall ligand carries at least one formal negative) appears on 1,267 US grants and 1,146 published applications in this corpus.
Search patents in B01J- Granted patents
- 1,267
- Published applications
- 1,146
- Assignees
- 692
- Inventors
- 3,513
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 8 | 0 |
| 1978 | 11 | 0 |
| 1979 | 9 | 0 |
| 1980 | 15 | 0 |
| 1981 | 17 | 0 |
| 1982 | 17 | 0 |
| 1983 | 16 | 0 |
| 1984 | 11 | 0 |
| 1985 | 9 | 0 |
| 1986 | 6 | 0 |
| 1987 | 13 | 0 |
| 1988 | 11 | 0 |
| 1989 | 15 | 0 |
| 1990 | 9 | 0 |
| 1991 | 11 | 0 |
| 1992 | 20 | 0 |
| 1993 | 16 | 0 |
| 1994 | 16 | 0 |
| 1995 | 11 | 0 |
| 1996 | 19 | 0 |
| 1997 | 20 | 0 |
| 1998 | 24 | 0 |
| 1999 | 16 | 0 |
| 2000 | 25 | 0 |
| 2001 | 30 | 9 |
| 2002 | 35 | 27 |
| 2003 | 35 | 37 |
| 2004 | 31 | 31 |
| 2005 | 31 | 44 |
| 2006 | 26 | 23 |
| 2007 | 21 | 30 |
| 2008 | 16 | 24 |
| 2009 | 10 | 44 |
| 2010 | 30 | 36 |
| 2011 | 22 | 39 |
| 2012 | 29 | 27 |
| 2013 | 27 | 39 |
| 2014 | 30 | 50 |
| 2015 | 39 | 48 |
| 2016 | 42 | 57 |
| 2017 | 53 | 56 |
| 2018 | 43 | 53 |
| 2019 | 61 | 71 |
| 2020 | 49 | 55 |
| 2021 | 45 | 76 |
| 2022 | 52 | 66 |
| 2023 | 43 | 58 |
| 2024 | 61 | 61 |
| 2025 | 25 | 57 |
| 2026 | 16 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Metal-organic framework (MOF) MIL-125 and preparation method and use thereof25 Aug 2026US 12,714,989 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Reduction by a silane in the presence of Zinc catalyst28 Jul 2026US 12,692,213 B2Firmenich SA
- Method for preparing arylvinylsulphones28 Jul 2026US 12,692,224 B2Kemira Oyj
- Chiral bimetallic cooperative catalysis system containing chelating ligand and use thereof in asymmetric synthesis of bedaquiline16 Jun 2026US 12,654,154 B2Shanghai Jiao Tong University
- Selective terminal CH alumination of saturated hydrocarbons12 May 2026US 12,623,985 B2Cornell University
- Manganese polymers and catalysts for plastic articles24 Sep 2026US 2026/0286097 A1Plastipak Packaging, Inc.
- Encapsulated catalyst, method of preparation, composition and methods involving hydrosilylation17 Sep 2026US 2026/0273516 A1Dow Silicones Corporation
- Process for preparing solketal acrylate by transesterification17 Sep 2026US 2026/0274813 A1BASF SE
- Process for Producing Guerbet Alcohols from Fusel Alcohols20 Aug 2026US 2026/0242315 A1Terra Mater BV
- Process for preparing, by hydroformylation, short-chain olefins in the gas phase20 Aug 2026US 2026/0242321 A1Evonik Oxeno GmbH
Most cited
By later US patents
- Silica-coated alumina activator-supports for metallocene catalyst compositions292US 7,884,163 B2Chevron Phillips Chemical Company LP · 2011
- Polymerization of .alpha.-olefins with transition metal catalysts based on bidentate ligands containing pyridine or quinoline moiety209US 5,637,660 ALyondell Petrochemical Company · 1997
- Method of preparing ruthenium and osmium carbene complexes104US 5,710,298 ACalifornia Institute of Technology · 1998
- Polyether-containing double metal cyanide catalysts103US 5,545,601 AARCO Chemical Technology, L. P. · 1996
- Chromium compounds and uses thereof80US 5,198,563 APhillips Petroleum Company · 1993