B01J 31/2495
Ligands comprising a phosphine-p atom and one or more further complexing phosphorus
Official title: {Ligands comprising a phosphine-P atom and one or more further complexing phosphorus atoms covered by groups B01J31/1845 - B01J31/1885, e.g. phosphine/phosphinate or phospholyl/phosphonate ligands}
B01J31/2495 (Ligands comprising a phosphine-p atom and one or more further complexing phosphorus) appears on 63 US grants and 54 published applications in this corpus.
Search patents in B01J- Granted patents
- 63
- Published applications
- 54
- Assignees
- 37
- Inventors
- 169
- Latest grant
- 13 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 2 |
| 2004 | 1 | 1 |
| 2005 | 2 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 4 |
| 2010 | 1 | 2 |
| 2011 | 2 | 3 |
| 2012 | 1 | 0 |
| 2013 | 3 | 2 |
| 2014 | 4 | 1 |
| 2015 | 0 | 5 |
| 2016 | 5 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 5 | 4 |
| 2020 | 2 | 2 |
| 2021 | 2 | 4 |
| 2022 | 5 | 3 |
| 2023 | 2 | 7 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Chromium complex and catalyst therefrom13 Feb 2024US 11,896,965 B2Dow Global Technologies LLC
- Alcohols production20 Jun 2023US 11,680,032 B2SCION Holdings LLC
- Process for oligomerization11 Apr 2023US 11,623,209 B2Dow Global Technologies LLC
- Chromium complex and catalyst therefrom8 Nov 2022US 11,491,474 B2Dow Global Technologies LLC
- Cyclopropanation method11 Oct 2022US 11,465,966 B2Okinawa Institute of Science and Technology School Corporation
- Bulky and small-steric-hindrance ligand and use thereof17 Sep 2026US 2026/0273518 A1Dg Hc Optical Co., Ltd
- Organometallic compounds, and preparation and use thereof12 Jun 2025US 2025/0188107 A1Umicore AG & Co. KG
- Hydrogenation of dienals or dienones with rhodium complexes under carbon monoxide free atmosphere27 Jun 2024US 2024/0208891 A1
- Phospholane-phosphite ligands for alkene hydroformylation catalysts9 Nov 2023US 2023/0357115 A1Eastman Chemical Company
- Alcohols Production9 Nov 2023US 2023/0357116 A1SCION Holdings LLC
Most cited
By later US patents
- Hydroformylation process using bisphosphine monooxide ligands34US 4,400,548 AUnion Carbide Corporation · 1983
- Separation processes34US 5,932,772 AUnion Carbide Chemicals & Plastics Technology Corporation · 1999
- Metal-ligand complex catalyzed processes18US 5,874,640 AUnion Carbide Chemicals & Plastics Technology Corporation · 1999
- Hydroformylation process using triarylphosphine and bisphosphine monooxide ligands14US 4,491,675 AUnion Carbide Corporation · 1985
- Process for preparing tertiary phosphines containing phosphinate or phosphonate groups, and novel tertiary phosphines containing phosphinate groups12US 5,801,263 AHoechst Aktiengesellschaft · 1998