B01J 21/066
Zirconium or hafnium
Official title: {Zirconium or hafnium; Oxides or hydroxides thereof}
B01J21/066 (Zirconium or hafnium) appears on 1,239 US grants and 1,480 published applications in this corpus.
Search patents in B01J- Granted patents
- 1,239
- Published applications
- 1,480
- Assignees
- 687
- Inventors
- 3,932
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 16 | 0 |
| 1993 | 14 | 0 |
| 1994 | 6 | 0 |
| 1995 | 12 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 20 | 0 |
| 2001 | 18 | 3 |
| 2002 | 18 | 14 |
| 2003 | 21 | 43 |
| 2004 | 26 | 55 |
| 2005 | 23 | 48 |
| 2006 | 26 | 40 |
| 2007 | 21 | 53 |
| 2008 | 32 | 40 |
| 2009 | 30 | 60 |
| 2010 | 42 | 70 |
| 2011 | 44 | 58 |
| 2012 | 37 | 73 |
| 2013 | 41 | 59 |
| 2014 | 55 | 69 |
| 2015 | 63 | 58 |
| 2016 | 54 | 53 |
| 2017 | 62 | 51 |
| 2018 | 48 | 62 |
| 2019 | 53 | 67 |
| 2020 | 45 | 72 |
| 2021 | 55 | 100 |
| 2022 | 54 | 99 |
| 2023 | 69 | 84 |
| 2024 | 65 | 67 |
| 2025 | 49 | 47 |
| 2026 | 39 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heterogeneous catalyst for transesterification and method of preparing same6 Oct 2026US RE51,051 E1Crystaphase Products, Inc.
- Process for making cerium and zirconium containing compositions using mesitylene and composition made by same25 Aug 2026US 12,714,986 B2Neo Performance Materials (Singapore) Pte. Ltd.
- Heterogeneous catalyst for transesterification and method of preparing same18 Aug 2026US RE50,994 E1Crystaphase Products, Inc.
- Three-way conversion catalyst composition comprising platinum-rhodium bimetallic components11 Aug 2026US 12,702,968 B2BASF Mobile Emissions Catalysts LLC
- Heterogeneous synthesis of methylene dianiline4 Aug 2026US 12,698,253 B2BASF SE
- Methods for preparing biodiesel by directional regulating hydrodeoxygenation of biological oils17 Sep 2026US 2026/0275200 A1Dalian University of Technology
- Belly Blade Mounted to Center of Mower Equipment17 Sep 2026US 2026/0275210 A1
- Catalyst, preparation method and use thereof10 Sep 2026US 2026/0264050 A1Shanghai DiYang Chemical Technology Co., Ltd.
- Catalyst for decomposing perfluorocompounds27 Aug 2026US 2026/0249272 A1Ecoprohn
- Processes for preparing c2 to c4 hydrocarbons using hybrid catalysts27 Aug 2026US 2026/0250581 A1Dow Global Technologies LLC
Most cited
By later US patents
- Mixed-metal oxide particles by liquid feed flame spray pyrolysis of oxide precursors in oxygenated solvents114US 7,220,398 B2TAL Materials & The Regents of the University of Michigan · 2007
- Flame made metal oxides99US 7,211,236 B2Eidgenossische Technische Hochschule Zurich · 2007
- Catalyst structure having integral heat exchange93US 5,250,489 ACatalytica, Inc. · 1993
- Titanium dioxide photocatalyst84US 6,387,844 B12002
- Preparation of amines83US 5,530,127 ABASF SE · 1996