B01J 2531/84
Metals of the iron group
B01J2531/84 (Metals of the iron group) appears on 1,873 US grants and 1,462 published applications in this corpus.
Search patents in B01J- Granted patents
- 1,873
- Published applications
- 1,462
- Assignees
- 832
- Inventors
- 4,265
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 43 | 0 |
| 1977 | 20 | 0 |
| 1978 | 36 | 0 |
| 1979 | 30 | 0 |
| 1980 | 33 | 0 |
| 1981 | 51 | 0 |
| 1982 | 44 | 0 |
| 1983 | 30 | 0 |
| 1984 | 22 | 0 |
| 1985 | 26 | 0 |
| 1986 | 17 | 0 |
| 1987 | 20 | 0 |
| 1988 | 7 | 0 |
| 1989 | 16 | 0 |
| 1990 | 26 | 0 |
| 1991 | 18 | 0 |
| 1992 | 23 | 0 |
| 1993 | 29 | 0 |
| 1994 | 24 | 0 |
| 1995 | 26 | 0 |
| 1996 | 35 | 0 |
| 1997 | 29 | 0 |
| 1998 | 38 | 0 |
| 1999 | 40 | 0 |
| 2000 | 42 | 0 |
| 2001 | 41 | 16 |
| 2002 | 48 | 36 |
| 2003 | 56 | 59 |
| 2004 | 47 | 68 |
| 2005 | 45 | 58 |
| 2006 | 41 | 47 |
| 2007 | 37 | 44 |
| 2008 | 29 | 39 |
| 2009 | 24 | 47 |
| 2010 | 39 | 58 |
| 2011 | 31 | 59 |
| 2012 | 30 | 48 |
| 2013 | 31 | 63 |
| 2014 | 41 | 70 |
| 2015 | 49 | 68 |
| 2016 | 73 | 61 |
| 2017 | 61 | 67 |
| 2018 | 53 | 56 |
| 2019 | 65 | 104 |
| 2020 | 61 | 68 |
| 2021 | 55 | 58 |
| 2022 | 33 | 72 |
| 2023 | 43 | 51 |
| 2024 | 53 | 64 |
| 2025 | 42 | 56 |
| 2026 | 20 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Preparation method of sulfur-containing biphenyl compound8 Sep 2026US 12,729,179 B2Jiangsu Yangnong Chemical Co., Ltd.
- Cobalt catalysts containing “smart” or “task specific” anions1 Sep 2026US 12,722,146 B2The Texas A&M University System
- Synthesis of atomically dispersed M—N—C catalysts via selective metalation11 Aug 2026US 12,702,970 B2Wisconsin Alumni Research Foundation
- Process for preparing polypropylene carbonate30 Jun 2026US 12,668,661 B2ENI S. p. A.
- Method for preparing unrefined SAF intermediate using polyols and the SAF intermediate prepared thereby30 Jun 2026US 12,668,751 B1Shandong Jianzhu University
- Selective semi-hydrogenation of allene24 Sep 2026US 2026/0284649 A1Firmenich SA
- Mesoporous nickel powder and preparation method therefor, nickel-phosphorus catalyst system and adiponitrile preparation method3 Sep 2026US 2026/0257212 A1Shandong Nhu Fine Chemical Science and Technology Company Ltd.
- Catalyst for ammonia synthesis obtained by combining hydrogen-containing aluminum and iron3 Sep 2026US 2026/0257929 A1Institute of Science Tokyo
- Process for Producing Guerbet Alcohols from Fusel Alcohols20 Aug 2026US 2026/0242315 A1Terra Mater BV
- Catalyst for sp3-carbon-hydrogen-bond primary amination reaction, and method for preparing primary amine compound13 Aug 2026US 2026/0234096 A1West China Second University Hospital, Sichuan University
Most cited
By later US patents
- Texaphyrin-oligonucleotide conjugates308US 5,587,371 ABoard of Trustees, Univ. of TX Sys. · 1996
- Highly active double metal cyanide catalysts250US 5,482,908 AARCO Chemical Technology, L. P. · 1996
- Aminoalcohol lipidoids and uses thereof207US 8,450,298 B2Massachusetts Institute of Technology · 2013
- Crystalline metal-organic microporous materials153US 5,648,508 ANalco Chemical Company · 1997
- Polymerization of ethylene140US 5,955,555 AE. I. Du Pont de Nemours and Company · 1999