C22B 34/365
From spent catalysts
Official title: {from spent catalysts}
C22B34/365 (From spent catalysts) appears on 28 US grants and 21 published applications in this corpus.
Search patents in C22B- Granted patents
- 28
- Published applications
- 21
- Assignees
- 25
- Inventors
- 63
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 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 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 3 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 2 |
| 2022 | 0 | 1 |
| 2023 | 2 | 3 |
| 2024 | 2 | 1 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
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.
- Process for oxidative cleavage of vegetable oils containing monosaturated fatty acid triglycerides30 Jul 2024US 12,049,682 B2Novamont S. p. A.
- Method for selective recovery of valuable metal from waste denitrification catalyst through alkali fusion16 Jul 2024US 12,037,659 B2Korea Institute of Geoscience and Mineral Resources
- Syngas production and recovery of active phase metals from gasifier slag containing spent catalyst22 Aug 2023US 11,732,204 B2Saudi 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
- Process for recovering and regenerating a catalyst from ash19 Oct 2023US 2023/0330643 A1Avantium Knowledge Centre B.V.
- Metals recovery from spent supported catalyst17 Aug 2023US 2023/0257280 A1Chevron U.S.A.Inc.
- Process for the recovery of cobalt and tungstic acid and/or its derivatives from aqueous solutions22 Jun 2023US 2023/0193420 A1Novamont S. p. A.
- Metals recovery from spent catalyst18 Aug 2022US 2022/0259696 A1Chevron U.S.A.Inc.
Most cited
By later US patents
- Method of separately recovering metal values of petroleum refining catalyst26US 4,861,565 AThe Hall Chemical Company · 1989
- Leaching metals from spent hydroprocessing catalysts with ammonium sulfate22US 4,554,138 AChevron Research Company · 1985
- Selective extraction of molybdenum and vanadium from spent catalysts by oxidative leaching with sodium aluminate and caustic21US 4,666,685 AAmax Inc. · 1987
- Cyclic process for recovering metal values and alumina from spent catalysts15US 4,670,229 AAmax Inc. · 1987
- Process for recovering group VIB metals from a catalyst15US 8,057,763 B2Albemarle Netherlands B. V. · 2011