B01J 2531/0258
Flexible ligands
Official title: Flexible ligands, e.g. mainly sp3-carbon framework as exemplified by the "tedicyp" ligand, i.e. cis-cis-cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane
B01J2531/0258 (Flexible ligands) appears on 129 US grants and 134 published applications in this corpus.
Search patents in B01J- Granted patents
- 129
- Published applications
- 134
- Assignees
- 94
- Inventors
- 370
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1984 | 4 | 0 |
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| 1989 | 1 | 0 |
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| 2003 | 4 | 6 |
| 2004 | 3 | 7 |
| 2005 | 2 | 5 |
| 2006 | 3 | 7 |
| 2007 | 7 | 6 |
| 2008 | 5 | 4 |
| 2009 | 2 | 6 |
| 2010 | 6 | 7 |
| 2011 | 4 | 4 |
| 2012 | 1 | 4 |
| 2013 | 1 | 5 |
| 2014 | 5 | 3 |
| 2015 | 5 | 2 |
| 2016 | 3 | 11 |
| 2017 | 7 | 7 |
| 2018 | 4 | 10 |
| 2019 | 12 | 11 |
| 2020 | 6 | 4 |
| 2021 | 5 | 5 |
| 2022 | 5 | 5 |
| 2023 | 3 | 6 |
| 2024 | 2 | 1 |
| 2025 | 3 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oxidized polyethylene compounds and methods of making the same18 Aug 2026US 12,709,680 B2The Regents of the University of California
- Degradative method10 Mar 2026US 12,568,971 B2Catexel Technologies Limited
- Borylimide catalysts21 Oct 2025US 12,447,467 B2SCG Chemicals Public Company Limited
- Use of a multidentate phosphite ligand in the catalytic synthesis of adiponitrile17 Jun 2025US 12,331,007 B2Zhejiang Nhu Company Ltd.
- Manganese catalysts and their use in hydrogenation of ketones22 Apr 2025US 12,281,058 B2University Court of the University of St Andrews
- 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
- Rare earth and group 4 catalysts for ambient conversion of dinitrogen to secondary silylamines21 Aug 2025US 2025/0262613 A1The Regents of the University of California
- A catalyst composition22 May 2025US 2025/0161927 A1National University of Singapore
- Ethylene oligomerization catalyst including ligand compound, catalyst composition employing same, and method for producing ethylene oligomer by using same13 Feb 2025US 2025/0051491 A1Korea Research Institute of Chemical Technology
- Use of a Multidentate Phosphite Ligand in the Catalytic Synthesis of Adiponitrile10 Oct 2024US 2024/0336560 A1Zhejiang Nhu Company Ltd.
Most cited
By later US patents
- Synthesis of manganese oxidation catalyst73US 5,153,161 ALever Brothers Company, Division of Conopco, Inc. · 1992
- Process for the preparation of manganese bleach catalyst56US 5,280,117 ALever Brothers Company, Division of Conopco, Inc. · 1994
- New types of organometallic reagents and catalysts for asymmetric synthesis53US 4,885,376 AIowa State University Research Foundation, Inc. · 1989
- Synthesis of manganese oxidation catalyst52US 5,256,779 ALever Brothers Company, Division of Conopco, Inc. · 1993
- Catalyst preparation method34US 6,656,866 B2Univation Technologies, LLC · 2003