C22B 7/009
General processes for recovering metals or metallic compounds from spent catalysts
Official title: {General processes for recovering metals or metallic compounds from spent catalysts (for recovering specific metals C22B11/00 - C22B61/00)}
C22B7/009 (General processes for recovering metals or metallic compounds from spent catalysts) appears on 178 US grants and 153 published applications in this corpus.
Search patents in C22B- Granted patents
- 178
- Published applications
- 153
- Assignees
- 136
- Inventors
- 440
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 10 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 3 |
| 2003 | 2 | 2 |
| 2004 | 4 | 4 |
| 2005 | 0 | 1 |
| 2006 | 2 | 4 |
| 2007 | 3 | 1 |
| 2008 | 2 | 7 |
| 2009 | 3 | 15 |
| 2010 | 12 | 5 |
| 2011 | 4 | 3 |
| 2012 | 6 | 7 |
| 2013 | 2 | 7 |
| 2014 | 3 | 6 |
| 2015 | 6 | 10 |
| 2016 | 5 | 7 |
| 2017 | 9 | 9 |
| 2018 | 7 | 2 |
| 2019 | 10 | 8 |
| 2020 | 4 | 2 |
| 2021 | 2 | 4 |
| 2022 | 2 | 3 |
| 2023 | 6 | 13 |
| 2024 | 5 | 7 |
| 2025 | 8 | 13 |
| 2026 | 4 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metals recovery from spent catalyst11 Aug 2026US 12,703,892 B2Chevron U.S.A.Inc.
- Metals recovery from spent supported catalyst17 Mar 2026US 12,577,125 B2Chevron U.S.A.Inc.
- Platinum-group metal recovery method, composition containing platinum-group metals, and ceramic material24 Feb 2026US 12,559,819 B2University of Fukui
- Systems and methods for recovery of molten metal3 Feb 2026US 12,540,413 B2Phoenix Tailings, Inc.
- Method for recovering precious metal from precious metal-containing waste catalyst14 Oct 2025US 12,442,058 B2Heraeus Precious Metal Technology (China) Co., Ltd.
- Recycling of catalyst coated membranes10 Sep 2026US 2026/0265860 A1
- Method of recycling waste ionomer membrane3 Sep 2026US 2026/0258524 A1Johnson Matthey Public Limited Company
- A method of treating a silicon carbide bearing material25 Jun 2026US 2026/0176714 A1Sibanye Stillwater Limited
- Recycling and regeneration of lithium-ion battery cathodes21 May 2026US 2026/0142261 A1The Regents of the University of California
- Systems and methods for recovery of molten metal7 May 2026US 2026/0125814 A1Phoenix Tailings, Inc.
Most cited
By later US patents
- Process for reducing possibility of leaching of heavy metals from used petroleum cracking catalyst in land fills35US 4,268,188 APhillips Petroleum Company · 1981
- Process to recover metals from spent catalyst31US 6,180,072 B2Shell Oil Company · 2001
- Recovery of metal values from spent catalysts30US 4,721,606 AUnion Oil Company of California · 1988
- Reclamation of metals by flash direct reduction28US 4,822,410 AMKR, Inc. · 1989
- Process for extracting metals from spent desulphurization catalysts26US 4,087,510 AAkzona Incorporated · 1978