B01J 31/2239
Bridging ligands
Official title: {Bridging ligands, e.g. OAc in Cr2(OAc)4, Pt4(OAc)8 or dicarboxylate ligands}
B01J31/2239 (Bridging ligands) appears on 284 US grants and 324 published applications in this corpus.
Search patents in B01J- Granted patents
- 284
- Published applications
- 324
- Assignees
- 247
- Inventors
- 1,032
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 2 |
| 2002 | 6 | 5 |
| 2003 | 5 | 5 |
| 2004 | 3 | 3 |
| 2005 | 4 | 6 |
| 2006 | 6 | 5 |
| 2007 | 3 | 7 |
| 2008 | 4 | 6 |
| 2009 | 2 | 20 |
| 2010 | 7 | 10 |
| 2011 | 7 | 6 |
| 2012 | 9 | 5 |
| 2013 | 9 | 12 |
| 2014 | 6 | 19 |
| 2015 | 10 | 11 |
| 2016 | 11 | 21 |
| 2017 | 17 | 15 |
| 2018 | 21 | 19 |
| 2019 | 18 | 20 |
| 2020 | 15 | 22 |
| 2021 | 20 | 24 |
| 2022 | 17 | 20 |
| 2023 | 12 | 15 |
| 2024 | 16 | 22 |
| 2025 | 6 | 18 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metal-organic framework (MOF) MIL-125 and preparation method and use thereof25 Aug 2026US 12,714,989 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Reduction by a silane in the presence of Zinc catalyst28 Jul 2026US 12,692,213 B2Firmenich SA
- Coordinated platinum hydrosilylation catalysts with COOH based ligands17 Feb 2026US 12,551,876 B2The Trustees of Indiana University
- Ionic solid27 Jan 2026US 12,534,489 B2Japan Science and Technology Agency
- Visible light-reactive photocatalyst for treating organic pollutants20 Jan 2026US 12,528,070 B2Kyungpook National Univesity Industry-Academic Cooperation Foundation
- 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
- Plastic depolymerization using metal organic framework based catalysts7 May 2026US 2026/0125533 A1Basell Poliolefine Italia S.R,I.
- Preparation Method and Application of Imidazole-Functionalized Metal-Organic Framework Material Im RE-MOF With Lipase-Mimetic Catalytic Activity30 Apr 2026US 2026/0116898 A1Jiangnan University
- Catalyst composite for hydrogen isotope exchange and manufacturing method thereof2 Apr 2026US 2026/0091371 A1Korea Atomic Energy Research Institute
- Double metal cyanide complex catalyst and method for producing same, double metal cyanide complex slurry catalyst and method for producing same, and polymer production method19 Mar 2026US 2026/0077342 A1AGC Inc.
Most cited
By later US patents
- Process for producing polyalkylene carbonates76US 6,617,467 B1BASF SE · 2003
- Process for the epoxidation of an organic compound with oxygen or an oxygen-delivering compounds using catalysts containing metal-organic frame-work materials73US 6,624,318 B1BASF SE · 2003
- Hydroconversion processes employing multi-metallic catalysts and method for making thereof60US 8,173,570 B2Chevron U.S.A.Inc. · 2012
- Lanthanide-based catalyst composition for producing cis-1,4-polydienes59US 7,008,899 B2Bridgestone Corporation · 2006
- Methods of preparing a polymerization catalyst59US 7,700,516 B2Chevron Phillips Chemical Company LP · 2010