B01J 2531/0202
Polynuclearity
B01J2531/0202 (Polynuclearity) appears on 393 US grants and 275 published applications in this corpus.
Search patents in B01J- Granted patents
- 393
- Published applications
- 275
- Assignees
- 245
- Inventors
- 937
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 16 | 0 |
| 1982 | 16 | 0 |
| 1983 | 8 | 0 |
| 1984 | 6 | 0 |
| 1985 | 9 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 10 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 1 |
| 2002 | 7 | 3 |
| 2003 | 4 | 12 |
| 2004 | 7 | 4 |
| 2005 | 6 | 2 |
| 2006 | 3 | 6 |
| 2007 | 4 | 8 |
| 2008 | 1 | 3 |
| 2009 | 4 | 4 |
| 2010 | 3 | 5 |
| 2011 | 1 | 4 |
| 2012 | 2 | 5 |
| 2013 | 4 | 9 |
| 2014 | 6 | 15 |
| 2015 | 13 | 12 |
| 2016 | 12 | 11 |
| 2017 | 13 | 20 |
| 2018 | 8 | 10 |
| 2019 | 12 | 21 |
| 2020 | 14 | 14 |
| 2021 | 16 | 25 |
| 2022 | 11 | 18 |
| 2023 | 11 | 24 |
| 2024 | 23 | 17 |
| 2025 | 11 | 13 |
| 2026 | 9 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01J 2531/0205Bi- or polynuclear complexes, i.e. comprising two or more metal coordination centresIndexing code222
- B01J 2531/0211Metal clusters, i.e. complexes comprising 3 to about 1000 metal atoms withIndexing code115
- B01J 2531/0208Bimetallic complexes, i.e. comprising one or more units of two metals, withIndexing code63
Recent patents
- Method for carrying out reaction of isatin compound and cyclopropenone compound at low catalytic amount22 Sep 2026US 12,741,972 B2Soochow University
- Synthesis of atomically dispersed M—N—C catalysts via selective metalation11 Aug 2026US 12,702,970 B2Wisconsin Alumni Research Foundation
- Method for preparing unrefined SAF intermediate using polyols and the SAF intermediate prepared thereby30 Jun 2026US 12,668,751 B1Shandong Jianzhu University
- Enantioselective hydrogenation of 4-substituted 1,2-dihydroquinolines in presence of a chiral iridium catalyst2 Jun 2026US 12,643,860 B2Bayer Aktiengesellschaft
- Selective terminal CH alumination of saturated hydrocarbons12 May 2026US 12,623,985 B2Cornell University
- Solid titanium catalyst component, catalyst for polymerizing olefin, and method for polymerizing olefin24 Sep 2026US 2026/0286018 A1Mitsui Chemicals, Inc.
- Process6 Aug 2026US 2026/0226202 A1Ineos Europe AG
- Ethylene production method, carbon dioxide reduction electrode, and carbon dioxide reduction apparatus6 Aug 2026US 2026/0226632 A1Sumitomo Chemical Company, Limited
- Catalyst system and method for carbonylation reaction23 Jul 2026US 2026/0208174 A1Shandong Nhu Fine Chemical Science and Technology Company Ltd.
- Ylide-functionalized phosphanes for use in metal complexes and homogeneous catalysis30 Apr 2026US 2026/0115706 A1Umicore AG & Co. KG
Most cited
By later US patents
- Highly active double metal cyanide catalysts250US 5,482,908 AARCO Chemical Technology, L. P. · 1996
- Substituted aminomethylphosphines, compositions and coordination complexes of same, their synthesis and processes using same82US 6,043,363 ASymyx Technologies, Inc. · 2000
- Chromium compounds and uses thereof80US 5,198,563 APhillips Petroleum Company · 1993
- Substituted aminomethylphosphines, coordination complexes of aminomethylphosphines and their synthesis77US 6,034,240 ASymyx Technologies, Inc. · 2000
- Process of polymerizing olefins using diphenylsilyl or dimethyl tin bridged 1-methyl fluorenyl metallocenes74US 5,631,335 APhillips Petroleum Company · 1997