B01J 31/1865
Phosphonites , their isomeric phosphinates and ro-substitution derivatives thereof
Official title: {Phosphonites (RP(OR)2) , their isomeric phosphinates (R2(RO)P=O) and RO-substitution derivatives thereof}
B01J31/1865 (Phosphonites , their isomeric phosphinates and ro-substitution derivatives thereof) appears on 103 US grants and 77 published applications in this corpus.
Search patents in B01J- Granted patents
- 103
- Published applications
- 77
- Assignees
- 57
- Inventors
- 301
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 3 | 5 |
| 2004 | 2 | 5 |
| 2005 | 6 | 4 |
| 2006 | 3 | 7 |
| 2007 | 2 | 7 |
| 2008 | 4 | 5 |
| 2009 | 6 | 3 |
| 2010 | 5 | 2 |
| 2011 | 2 | 3 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 3 | 1 |
| 2015 | 4 | 6 |
| 2016 | 0 | 1 |
| 2017 | 2 | 7 |
| 2018 | 2 | 3 |
| 2019 | 6 | 3 |
| 2020 | 3 | 3 |
| 2021 | 2 | 3 |
| 2022 | 4 | 3 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 3 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Ligands for production of 1-octene in chromium assisted ethylene oligomerization process14 Oct 2025US 12,440,830 B2Sabic Global Technologies B.V.
- Catalyst systems suitable for the tetramerization of ethylene and methods of using the same22 Jul 2025US 12,364,976 B2Saudi Arabian Oil Company
- Spiro-bisphosphorous compound, and preparation and application thereof14 Jan 2025US 12,195,489 B2Guangdong Oxo Chem Ltd.
- Ligands for production of 1-octene in chromium assisted ethylene oligomerization process12 Mar 2024US 11,925,927 B2Sabic Global Technologies B.V.
- Synthesis and characterization of Ru alkylidene complexes10 Oct 2023US 11,779,912 B2California Institute of Technology
- Eggshell type catalyst, and preparation method and application thereof in propylene hydroformylation reaction28 Aug 2025US 2025/0269362 A1Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Chiral spirocyclic compounds and methods of preparation and use thereof17 Jul 2025US 2025/0229262 A1The Hong Kong University of Science and Technology
- Catalyst systems suitable for the tetramerization of ethylene and methods of using the same12 Sep 2024US 2024/0299921 A1Saudi Arabian Oil Company
- Ligands for Production of 1-Octene in Chromium Assisted Ethylene Oligomerization Process16 Feb 2023US 2023/0053092 A1Sabic Global Technologies B.V.
- Spiro-bisphosphorous compound, and preparation and application thereof4 Aug 2022US 2022/0242891 A1Guangdong Oxo Chem Ltd.
Most cited
By later US patents
- Asymmetric syntheses48US 5,360,938 AUnion Carbide Chemicals & Plastics Technology Corporation · 1994
- Catalyst comprising at least one phosphonite ligand based nickel (O) complex and method for the production of nitriles41US 6,242,633 B1BASF SE · 2001
- Olefin oligomerization in the presence of novel complexes38US 5,557,023 AThe Governors of the University of Alberta · 1996
- Asymmetric syntheses36US 5,491,266 AUnion Carbide Chemicals & Plastics Technology Corporation · 1996
- Catalyst comprising a complex of a metal from subgroup VIII based on a bidentate phosphonite ligand, and method for producing nitriles30US 6,521,778 B1BASF SE · 2003