C22B 34/345
From spent catalysts
Official title: {from spent catalysts}
C22B34/345 (From spent catalysts) appears on 55 US grants and 46 published applications in this corpus.
Search patents in C22B- Granted patents
- 55
- Published applications
- 46
- Assignees
- 43
- Inventors
- 134
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 3 | 9 |
| 2010 | 7 | 7 |
| 2011 | 2 | 4 |
| 2012 | 4 | 2 |
| 2013 | 1 | 4 |
| 2014 | 3 | 2 |
| 2015 | 2 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 1 |
| 2023 | 2 | 4 |
| 2024 | 0 | 3 |
| 2025 | 1 | 0 |
| 2026 | 3 | 1 |
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.
- Method for recycling metals from porous materials comprising them28 Apr 2026US 12,611,652 B2Eurecat S. A.
- Metals recovery from spent supported catalyst17 Mar 2026US 12,577,125 B2Chevron U.S.A.Inc.
- Process for the selective recovery of transition metals from organic residues19 Aug 2025US 12,392,011 B2ENI S. p. A.
- Syngas production and recovery of active phase metals from gasifier slag containing spent catalyst22 Aug 2023US 11,732,204 B2Saudi Arabian Oil Company
- Pyrometallurgical process and plant for selective recycling of molybdenum in the reprocessing of spent petrochemical catalysts29 Jan 2026US 2026/0028697 A1Eco'ring
- Method for recovering valuable metals from spent catalysts7 Nov 2024US 2024/0368733 A1
- Leaching agent composition and method of removing metal from catalyst material30 May 2024US 2024/0175105 A1Saudi Arabian Oil Company
- Method for producing a catalyst comprising at least one group vib metal, at least one group viiib metal and a carrier based on oxide(s)11 Jan 2024US 2024/0009655 A1Ifp Energies Nouvelles
- Processes for recycling spent catalysts, recycling rechargeable batteries, and integrated processes thereof21 Dec 2023US 2023/0411723 A1Aleon Renewable Metals, LLC.
Most cited
By later US patents
- Metal recovery from hydroconverted heavy effluent32US 8,636,967 B2Intevep, S. A. · 2014
- 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
- Process for extracting metals from spent desulphurization catalysts26US 4,087,510 AAkzona Incorporated · 1978
- Method of separately recovering metal values of petroleum refining catalyst26US 4,861,565 AThe Hall Chemical Company · 1989