B01J 31/2247
At least one oxygen and one phosphorous atom present as complexing atoms
Official title: {At least one oxygen and one phosphorous atom present as complexing atoms in an at least bidentate or bridging ligand}
B01J31/2247 (At least one oxygen and one phosphorous atom present as complexing atoms) appears on 29 US grants and 23 published applications in this corpus.
Search patents in B01J- Granted patents
- 29
- Published applications
- 23
- Assignees
- 19
- Inventors
- 58
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 4 |
| 2015 | 1 | 3 |
| 2016 | 5 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 3 | 2 |
| 2024 | 3 | 5 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Nickel catalysts with single alkali ions for homopolymerization and copolymerization23 Dec 2025US 12,503,526 B2University of Houston System
- Nickel catalysts with single alkali ions for homopolymerization and copolymerization30 Jul 2024US 12,049,532 B2University of Houston System
- Nickel catalysts with two alkali ions for homopolymerization and copolymerization23 Jul 2024US 12,043,688 B2University of Houston System
- Nickel catalysts with single metal cations for homopolymerization and copolymerization23 Jul 2024US 12,043,689 B2University of Houston System
- Heterobimetallic catalysts and site-differentiated ligands for preparation thereof5 Dec 2023US 11,833,495 B2University of Houston System
- Rhenium(V) Alkylidyne Complexes and Methods of Use and Preparation Thereof27 Feb 2025US 2025/0065316 A1The Hong Kong University of Science and Technology
- Nickel catalysts with single alkali ions for homopolymerization and copolymerization5 Dec 2024US 2024/0400726 A1University of Houston System
- Nickel catalysts with two metal cations for homopolymerization and copolymerization23 May 2024US 2024/0166775 A1University of Houston System
- Nickel catalysts with single metal cations for homopolymerization and copolymerization11 Apr 2024US 2024/0117076 A1University of Houston System
- Nickel catalysts with single alkali ions for homopolymerization and copolymerization28 Mar 2024US 2024/0101726 A1University of Houston System
Most cited
By later US patents
- Catalyst ligands, catalyst compositions, catalyst metal complexes and processes for cross-coupling aromatic boron compounds with aromatic halogens or perfluoroalkylsulfonates29US 6,124,476 ASymyx Technologies, Inc. · 2000
- Process for the oligomerization of ethylene17US 4,293,727 AGulf Research & Development Company · 1981
- Iron(II) containing complex and condensation reaction catalysts, methods for preparing the catalysts, and compositions containing the catalysts16US 9,156,948 B2Dow Corning Corporation · 2015
- Nickel ylides15US 4,293,502 AGulf Research & Development Company · 1981
- Process for the oligomerization of ethylene in methanol15US 4,310,716 AGulf Research & Development Company · 1982