C22B 23/0438
Nitric acids or salts thereof
Official title: {Nitric acids or salts thereof}
C22B23/0438 (Nitric acids or salts thereof) appears on 23 US grants and 33 published applications in this corpus.
Search patents in C22B- Granted patents
- 23
- Published applications
- 33
- Assignees
- 23
- Inventors
- 86
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 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 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 3 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 4 |
| 2022 | 1 | 3 |
| 2023 | 2 | 5 |
| 2024 | 3 | 3 |
| 2025 | 3 | 5 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for supercritical fluid extraction of metal23 Jun 2026US 12,662,390 B2The Governing Council of the University of Toronto
- Method for recycling metals from porous materials comprising them28 Apr 2026US 12,611,652 B2Eurecat S. A.
- Method of selectively removing aluminum from waste electrode and a method of removing metal components from the waste electrode using the method24 Mar 2026US 12,586,834 B2LG Energy Solution, Ltd.
- Method for reducing waste by recovering transition metals from lithium secondary battery21 Oct 2025US 12,451,533 B2SK Innovation Co., Ltd.
- Sealed cobalt leaching device, reagent for cobalt leaching, method using device, use of method3 Jun 2025US 12,319,978 B2Sichuan Jiarui Technology Co., Ltd.
- Methods for regenerating metal oxides13 Aug 2026US 2026/0237772 A1
- Method of selectively removing aluminum from waste electrode and a method of removing metal components from the waste electrode using the method4 Jun 2026US 2026/0155472 A1LG Energy Solution, Ltd.
- Method for recovering transition metals from lithium secondary batteries12 Feb 2026US 2026/0042132 A1SK Innovation Co., Ltd.
- Sealed cobalt leaching device, reagent,use of method for cobalt leaching and polycrystalline diamond composite sheet13 Nov 2025US 2025/0347176 A1Sichuan Jiarui Technology Co., Ltd.
- Method and apparatus for recycling lithium-ion batteries28 Aug 2025US 2025/0273760 A1
Most cited
By later US patents
- Oxidation process for releasing metal values in which nitric acid is regenerated in situ28US 4,834,793 AHydrochem Developments Ltd. · 1989
- Oxidation process for releasing metal values in which nitric acid is regenerated in situ11US 4,670,051 AHydrochem Developments Ltd. · 1987
- Method and apparatus for recycling lithium-ion batteries10US 11,502,345 B2Worcester Polytechnic Institute · 2022
- Extraction or recovery of non-ferrous metal values from arsenic-containing materials10US 5,482,534 ASasox Processing Pty. Limited · 1996
- Method and apparatus for recycling lithium-ion batteries8US 11,769,916 B2Worcester Polytechnic Institute · 2023