C01F 7/24
With nitric acid or nitrogen oxides
Official title: with nitric acid or nitrogen oxides
C01F7/24 (With nitric acid or nitrogen oxides) appears on 12 US grants and 19 published applications in this corpus.
Search patents in C01F- Granted patents
- 12
- Published applications
- 19
- Assignees
- 13
- Inventors
- 44
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 2 |
| 2019 | 2 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 2 | 3 |
| 2026 | 0 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process and system for lithium production25 Nov 2025US 12,479,738 B2Icsip Pty Ltd
- Production of lithium chemicals and metallic lithium16 Sep 2025US 12,415,733 B2Icsip Pty Ltd
- Process for the preparation of high purity alumina4 Jul 2023US 11,691,888 B2Scandium International Mining Corporation
- Synthesis of M13 clusters from aluminum and gallium mineral polymorphs12 Apr 2022US 11,299,399 B2Oregon State University
- Synthesis of M13 clusters from aluminum and gallium mineral polymorphs24 Dec 2019US 10,513,442 B2Oregon State University
- A method for the preparation of alumina13 Aug 2026US 2026/0234017 A1Playa One Pty Ltd
- Process and system for lithium production12 Mar 2026US 2026/0070800 A1Icsip Pty Ltd
- Process and system for lithium production22 Jan 2026US 2026/0022023 A1Icsip Pty Ltd
- Process and system for lithium production15 Jan 2026US 2026/0015247 A1Icsip Pty Ltd
- Production of lithium chemicals and metallic lithium8 Jan 2026US 2026/0008682 A1Icsip Pty Ltd
Most cited
By later US patents
- Process for the production of alumina15US 6,576,204 B2Haldor Topsoe A/S · 2003
- Alumina production by nitric acid extraction of clay5US 4,246,239 AReynolds Metals Company · 1981
- Process of extraction of aluminum values from coal ash4US 4,243,640 A1981
- Spheroidal alumina particles with improved mechanical strength having a macroporous median diameter in the range 0.05 to 30 μm2US 10,022,702 B2Ifp Energies Nouvelles · 2018
- Method of recovering rare earth aluminum and silicon from rare earth-containing aluminum-silicon scraps1US 10,280,482 B2Grirem Advanced Materials Co., Ltd. · 2019