C01F 7/34
Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
C01F7/34 (Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts) appears on 308 US grants and 202 published applications in this corpus.
Search patents in C01F- Granted patents
- 308
- Published applications
- 202
- Assignees
- 226
- Inventors
- 771
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 10 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 11 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 1 |
| 2002 | 1 | 4 |
| 2003 | 4 | 8 |
| 2004 | 4 | 4 |
| 2005 | 4 | 7 |
| 2006 | 6 | 9 |
| 2007 | 2 | 4 |
| 2008 | 6 | 1 |
| 2009 | 2 | 8 |
| 2010 | 5 | 10 |
| 2011 | 8 | 5 |
| 2012 | 4 | 6 |
| 2013 | 7 | 9 |
| 2014 | 5 | 9 |
| 2015 | 5 | 6 |
| 2016 | 7 | 5 |
| 2017 | 4 | 18 |
| 2018 | 7 | 16 |
| 2019 | 12 | 13 |
| 2020 | 13 | 8 |
| 2021 | 7 | 9 |
| 2022 | 9 | 6 |
| 2023 | 9 | 10 |
| 2024 | 7 | 9 |
| 2025 | 7 | 11 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for production of sheet phase pseudo-boehmite using couette-taylor vortex reaction7 Apr 2026US 12,595,183 B2SK Innovation Co., Ltd.
- Process for producing high purity aluminum materials31 Mar 2026US 12,590,008 B2HiurA Pty Ltd
- Preparation method of nano aluminum oxide (nano-Al2O3) with controllable hydroxyl content and use thereof17 Feb 2026US 12,552,679 B2Kunming University of Science and Technology Kunming
- Alpha alumina with high purity and high relative density, a method for its production and its use27 Jan 2026US 12,534,378 B2
- Method for synthesizing SiO2Al2O3 containing sol solution and method for forming porous alumina film14 Oct 2025US 12,440,825 B2National Institute of Technology
- Process for producing high purity aluminium materials13 Aug 2026US 2026/0234015 A1HiPurA Pty Ltd
- Method for manufacturing aluminum hydroxide23 Jul 2026US 2026/0209058 A1MEC International Co., Ltd.
- Electrochemical metallurgical slag recycling14 May 2026US 2026/0132484 A1Electrasteel, Inc.
- Polycrystalline materials comprising yttrium aluminum perovskite and methods of making the same19 Mar 2026US 2026/0078526 A1CoorsTek, Inc.
- Method for producing nickel sulfate26 Feb 2026US 2026/0055007 A1SK Innovation Co., Ltd.
Most cited
By later US patents
- Process for durable sol-gel produced alumina-based ceramics, abrasive grain and abrasive products536US 4,744,802 AMinnesota Mining and Manufacturing Company · 1988
- Process for producing alumina96US 4,202,870 AUnion Carbide Corporation · 1980
- Non-aged inorganic oxide-containing aerogels and their preparation88US 4,619,908 AStauffer Chemical Company · 1986
- Porous inorganic oxide materials prepared by non-ionic surfactant templating route84US 5,795,559 ABoard of Trustees operating Michigan State University · 1998
- Process for preparing alumina78US 4,154,812 AW. R. Grace & Co. · 1979