C22B 3/065
Nitric acids or salts thereof
Official title: {Nitric acids or salts thereof}
C22B3/065 (Nitric acids or salts thereof) appears on 105 US grants and 168 published applications in this corpus.
Search patents in C22B- Granted patents
- 105
- Published applications
- 168
- Assignees
- 129
- Inventors
- 458
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 2 |
| 2005 | 3 | 3 |
| 2006 | 0 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 3 |
| 2009 | 3 | 5 |
| 2010 | 3 | 5 |
| 2011 | 5 | 3 |
| 2012 | 2 | 6 |
| 2013 | 3 | 2 |
| 2014 | 3 | 1 |
| 2015 | 2 | 4 |
| 2016 | 1 | 7 |
| 2017 | 4 | 8 |
| 2018 | 5 | 3 |
| 2019 | 4 | 4 |
| 2020 | 3 | 5 |
| 2021 | 5 | 9 |
| 2022 | 5 | 11 |
| 2023 | 6 | 23 |
| 2024 | 4 | 16 |
| 2025 | 9 | 21 |
| 2026 | 11 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compositions and systems for selective lithium leaching and related methods18 Aug 2026US 12,709,785 B2American Battery Technology Company
- Materials processing in solar module recycling19 May 2026US 12,629,695 B2SOLARCYCLE, Inc.
- High pressure caustic leach methods and processes for recovery of scandium and rare-earth oxides5 May 2026US 12,617,693 B2Scandium Canada Ltd.
- Integrated method for the commercial and industrial utilisation of calcium sulphate whilst obtaining rare earth elements from the production of phosphoric acid28 Apr 2026US 12,612,309 B2thyssenkrupp AG
- Comprehensive utilization method of beneficiation-metallurgy-chemical combination for germanium-rich lignite14 Apr 2026US 12,601,032 B1Central South University
- Process for the extraction of a by-product metal from a mineral concentrate8 Oct 2026US 2026/0308710 A1
- Method of recovery of scandium8 Oct 2026US 2026/0308716 A1Nippon Steel Corporation
- Method For Recovering Rare Earths And Coproducts From Phosphogypsum And Phosphoric Acid Sludge10 Sep 2026US 2026/0265867 A1Universite Mohammed VI Polytechnique
- Method for comprehensive utilization of ulexite ore resources3 Sep 2026US 2026/0257927 A1Fujian Jungie New Material Technology Co., Ltd.
- Methods for regenerating metal oxides13 Aug 2026US 2026/0237772 A1
Most cited
By later US patents
- Recovery of precious metal values from refractory ores49US 5,236,492 AFMC Gold Company · 1993
- Oxidation process for releasing metal values in which nitric acid is regenerated in situ28US 4,834,793 AHydrochem Developments Ltd. · 1989
- Process for recovering gold from refractory sulfidic ores15US 5,013,359 AHydrochem Developments Ltd. · 1991
- Recycling of CdTe photovoltaic waste14US 5,897,685 ADrinkard Metalox, Inc. · 1999
- Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same13US 3,965,239 AInternational Ore Technology, Inc. · 1976