B01J 2531/0266
Axially chiral or atropisomeric ligands
Official title: Axially chiral or atropisomeric ligands, e.g. bulky biaryls such as donor-substituted binaphthalenes, e.g. "BINAP" or "BINOL"
B01J2531/0266 (Axially chiral or atropisomeric ligands) appears on 301 US grants and 213 published applications in this corpus.
Search patents in B01J- Granted patents
- 301
- Published applications
- 213
- Assignees
- 146
- Inventors
- 643
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 15 | 0 |
| 1994 | 10 | 0 |
| 1995 | 1 | 0 |
| 1996 | 9 | 0 |
| 1997 | 11 | 0 |
| 1998 | 16 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 20 | 6 |
| 2002 | 11 | 12 |
| 2003 | 17 | 14 |
| 2004 | 14 | 25 |
| 2005 | 18 | 16 |
| 2006 | 9 | 9 |
| 2007 | 6 | 13 |
| 2008 | 5 | 8 |
| 2009 | 6 | 8 |
| 2010 | 13 | 13 |
| 2011 | 5 | 9 |
| 2012 | 7 | 10 |
| 2013 | 8 | 7 |
| 2014 | 12 | 7 |
| 2015 | 7 | 5 |
| 2016 | 6 | 7 |
| 2017 | 7 | 5 |
| 2018 | 5 | 6 |
| 2019 | 6 | 5 |
| 2020 | 5 | 2 |
| 2021 | 1 | 7 |
| 2022 | 4 | 6 |
| 2023 | 2 | 2 |
| 2024 | 1 | 5 |
| 2025 | 3 | 3 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diphenylamine-linked chiral bis(oxazoline) ligand without C2-symmetry, synthesis method and application thereof10 Feb 2026US 12,545,651 B2Zhejiang University of Technology
- Methods for enantioselective preparation of chiral tetraarylmethanes24 Jun 2025US 12,338,193 B2The Hong Kong University of Science and Technology
- Use of a multidentate phosphite ligand in the catalytic synthesis of adiponitrile17 Jun 2025US 12,331,007 B2Zhejiang Nhu Company Ltd.
- Spiro-bisphosphorous compound, and preparation and application thereof14 Jan 2025US 12,195,489 B2Guangdong Oxo Chem Ltd.
- Method for producing a spirooxindole derivative30 Jan 2024US 11,884,678 B2Daiichi Sankyo Company, Limited
- Process for preparing, by hydroformylation, short-chain olefins in the gas phase20 Aug 2026US 2026/0242321 A1Evonik Oxeno GmbH
- Processes for producing nitriles and phosphorus-containing catalysts for use in such processes5 Feb 2026US 2026/0034540 A1INV Nylon Chemicals Americas, LLC
- Process for preparing, by hydroformylation, short-chain olefins in the gas phase29 Jan 2026US 2026/0027559 A1Evonik Oxeno GmbH
- Process for the preparation of [ru(oac)2(ligand)] catalysts10 Apr 2025US 2025/0114775 A1Hoffmann-La Roche Inc.
- Methods and systems for modifying selectivity in catalytic reactions13 Mar 2025US 2025/0083136 A1Duke University
Most cited
By later US patents
- Transition metal complex catalyzed processes126US 4,769,498 AUnion Carbide Corporation · 1988
- Transition metal complex catalyzed processes112US 4,668,651 AUnion Carbide Corporation · 1987
- Hydroformylation process97US 5,288,918 AUnion Carbide Chemicals & Plastics Technology Corporation · 1994
- Hydrocyanation process and multidentate phosphite and nickel catalyst composition therefor93US 5,512,696 AE. I. Du Pont de Nemours and Company · 1996
- Transition metal complex catalyzed reactions89US 4,599,206 AUnion Carbide Corporation · 1986