B01J 31/2234
Beta-dicarbonyl ligands
Official title: {Beta-dicarbonyl ligands, e.g. acetylacetonates}
B01J31/2234 (Beta-dicarbonyl ligands) appears on 324 US grants and 222 published applications in this corpus.
Search patents in B01J- Granted patents
- 324
- Published applications
- 222
- Assignees
- 190
- Inventors
- 817
- Latest grant
- 10 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 10 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 5 |
| 2002 | 16 | 6 |
| 2003 | 10 | 10 |
| 2004 | 11 | 7 |
| 2005 | 4 | 9 |
| 2006 | 5 | 4 |
| 2007 | 6 | 9 |
| 2008 | 5 | 9 |
| 2009 | 5 | 6 |
| 2010 | 6 | 7 |
| 2011 | 4 | 9 |
| 2012 | 5 | 4 |
| 2013 | 8 | 7 |
| 2014 | 5 | 9 |
| 2015 | 7 | 5 |
| 2016 | 9 | 6 |
| 2017 | 9 | 6 |
| 2018 | 7 | 14 |
| 2019 | 13 | 14 |
| 2020 | 7 | 5 |
| 2021 | 3 | 12 |
| 2022 | 10 | 16 |
| 2023 | 5 | 19 |
| 2024 | 19 | 6 |
| 2025 | 4 | 11 |
| 2026 | 0 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Urethane exchange catalysts and methods for reprocessing cross-linked polyurethane foams10 Jun 2025US 12,325,778 B2Cornell University
- Catalyst-supported organic-inorganic hybrid composite particles capable of regulating polyurethane reaction rate, and preparation method therefor27 May 2025US 12,311,345 B2Agency for Defense Development
- Composition comprising branched aldehydes11 Feb 2025US 12,221,404 B2SCION Holdings LLC
- Method for preparing 3(4),8(9)-bisformyltricyclo[5.2.1.02,6]decane21 Jan 2025US 12,202,796 B2SK Chemicals Co., Ltd.
- Branched products19 Nov 2024US 12,145,904 B2SCION Holdings LLC
- Process for preparing, by hydroformylation, short-chain olefins in the gas phase20 Aug 2026US 2026/0242321 A1Evonik Oxeno GmbH
- Novel iron-based compounds, processes for the preparation thereof, and use thereof as catalysts16 Jul 2026US 2026/0200963 A1Centre National De La Recherche Scientifique
- Preparation method of dual-anion catalyst, and use of dual-anion catalyst in catalytic degradation of polyurethane material7 May 2026US 2026/0124609 A1Zhejiang University of Technology
- Process for making polyurethane23 Apr 2026US 2026/0109804 A1Rogers Corporation
- Fully-continuous synthesis method of cyproterone acetate19 Mar 2026US 2026/0078142 A1Fudan University
Most cited
By later US patents
- Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water65US 6,284,852 B1California Institute of Technology · 2001
- Methods of preparing a polymerization catalyst59US 7,700,516 B2Chevron Phillips Chemical Company LP · 2010
- Process of trimerizing and oligomerizing olefins using chromium compounds58US 5,523,507 APhillips Petroleum Company · 1996
- Operation of diesel engines with reduced particulate emission by utilization of platinum group metal fuel additive and pass-through catalytic oxidizer57US 5,501,714 APlatinum Plus, Inc. · 1996
- Non-aqueous liquid composition with an ionic character and its use as a solvent55US 5,104,840 AInstitut Francais du Petrole · 1992