B01J 2531/0263
Planar chiral ligands
Official title: Planar chiral ligands, e.g. derived from donor-substituted paracyclophanes and metallocenes or from substituted arenes
B01J2531/0263 (Planar chiral ligands) appears on 51 US grants and 64 published applications in this corpus.
Search patents in B01J- Granted patents
- 51
- Published applications
- 64
- Assignees
- 49
- Inventors
- 187
- Latest grant
- 22 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 3 |
| 2006 | 1 | 4 |
| 2007 | 4 | 3 |
| 2008 | 4 | 9 |
| 2009 | 2 | 3 |
| 2010 | 3 | 2 |
| 2011 | 1 | 6 |
| 2012 | 5 | 2 |
| 2013 | 2 | 2 |
| 2014 | 4 | 2 |
| 2015 | 2 | 2 |
| 2016 | 1 | 2 |
| 2017 | 3 | 3 |
| 2018 | 3 | 5 |
| 2019 | 1 | 0 |
| 2020 | 2 | 2 |
| 2021 | 1 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 2 |
| 2024 | 3 | 1 |
| 2025 | 1 | 4 |
By publication year. Applications have been published since 2001.
Recent patents
- Manganese catalysts and their use in hydrogenation of ketones22 Apr 2025US 12,281,058 B2University Court of the University of St Andrews
- Process for preparing tetralin compounds19 Nov 2024US 12,145,901 B1Arcus Biosciences, Inc.
- Polydentate organic ligand, preparation method and application thereof, metallo-supramolecular polymer and preparation method thereof30 Apr 2024US 11,969,719 B2Jilin University
- Method for producing a spirooxindole derivative30 Jan 2024US 11,884,678 B2Daiichi Sankyo Company, Limited
- Hydrogenation of imines with Ru complexes15 Nov 2022US 11,498,901 B2Firmenich SA
- Processes and intermediates for the preparation of pridopidine7 Aug 2025US 2025/0250233 A1Prilenia Neurotherapeutics Ltd.
- Hybrid Metallocene Catalyst and Method for Preparing Polyethylene Using the Same8 May 2025US 2025/0144607 A1LG Chem.Ltd.
- Process for the synthesis of pyrazolyl derivatives useful as anti-cancer agents27 Mar 2025US 2025/0101006 A1Novartis AG
- Camptothecin derivative intermediate, and preparation method therefor and use thereof20 Feb 2025US 2025/0059143 A1Shanghai Best-Link Bioscience
- Preparation method of l-nicotine25 Jul 2024US 2024/0246929 A1Huanggang Zy Biotechnology Co., Ltd.
Most cited
By later US patents
- Polymerization catalysts and process for producing bimodal polymers in a single reactor286US 7,226,886 B2Chevron Phillips Chemical Company LP · 2007
- Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands; use as highly active, selective catalysts for olefin metathesis63US 7,378,528 B2Evonik Degussa GmbH · 2008
- Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands; use as highly active, selective catalysts for olefin metathesis52US 6,635,768 B1Degussa AG · 2003
- Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands; use as highly active, selective catalysts for olefin metathesis49US 7,652,145 B2Degussa AG · 2010
- Polymerization catalysts and process for producing bimodal polymers in a single reactor48US 7,521,572 B2Chevron Phillips Chemical Company LP · 2009