C01F 7/30
Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis
Official title: Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
C01F7/30 (Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis) appears on 214 US grants and 200 published applications in this corpus.
Search patents in C01F- Granted patents
- 214
- Published applications
- 200
- Assignees
- 179
- Inventors
- 661
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 9 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 4 |
| 2002 | 1 | 3 |
| 2003 | 4 | 5 |
| 2004 | 3 | 6 |
| 2005 | 0 | 6 |
| 2006 | 5 | 7 |
| 2007 | 4 | 3 |
| 2008 | 3 | 6 |
| 2009 | 1 | 12 |
| 2010 | 7 | 7 |
| 2011 | 7 | 5 |
| 2012 | 4 | 4 |
| 2013 | 5 | 3 |
| 2014 | 2 | 5 |
| 2015 | 8 | 16 |
| 2016 | 7 | 9 |
| 2017 | 12 | 13 |
| 2018 | 8 | 6 |
| 2019 | 3 | 7 |
| 2020 | 6 | 12 |
| 2021 | 2 | 4 |
| 2022 | 8 | 16 |
| 2023 | 6 | 15 |
| 2024 | 6 | 4 |
| 2025 | 7 | 9 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of producing boehmite nanoparticles and apparatus for producing the same14 Jul 2026US 12,679,739 B2SK Innovation Co., Ltd.
- Colloidal flow-gate12 May 2026US 12,623,915 B2Technion Research & Development Foundation Limited
- Alumina particles, resin composition, molded body, and method for producing alumina particles14 Apr 2026US 12,600,674 B2DIC Corporation
- Process for producing alumina and a lithium salt17 Mar 2026US 12,577,115 B2Tianqi Lithium Kwinana Pty Ltd
- Composite particle and method of producing composite particle2 Dec 2025US 12,486,176 B2DIC Corporation
- Purification method for anhydrous aluminum chloride, and gas-phase nano-alumina preparation device and method therefor17 Sep 2026US 2026/0274702 A1Guangzhou Huifu Research Institute Co., Ltd.
- Production of high purity alumina and/or smelter-grade alumina3 Sep 2026US 2026/0257933 A1Andromeda Technologies Holdings Pty Ltd
- A method for producing a doped aluminous material20 Aug 2026US 2026/0242232 A1Lava Blue Ltd
- Process for manufacturing oxides13 Aug 2026US 2026/0234007 A1Evonik Operations GmbH
- Process for manufacturing oxides13 Aug 2026US 2026/0234016 A1Evonik Operations GmbH
Most cited
By later US patents
- Microcrystalline alumina-based ceramic articles245US 5,185,299 AMinnesota Mining and Manufacturing Company · 1993
- Microcrystalline alumina-based ceramic articles220US 4,954,462 AMinnesota Mining and Manufacturing Company · 1990
- 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
- Process for producing inorganic microspheres98US 5,849,055 AAsahi Glass Company, Limited · 1998
- Process for the production of sintered bauxite spheres87US 4,440,866 AA/S Niro Atomizer · 1984