C22B 34/325
From spent catalysts
Official title: {from spent catalysts}
C22B34/325 (From spent catalysts) appears on 4 US grants and 3 published applications in this corpus.
Search patents in C22B- Granted patents
- 4
- Published applications
- 3
- Assignees
- 6
- Inventors
- 13
- Latest grant
- 23 Nov 2010
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for separating and recovering base metals from used hydroprocessing catalyst23 Nov 2010US 7,837,960 B2Chevron U.S.A.Inc.
- Process for reducing chromium in nonvolatile residue resulting from air oxidation of cyclohexane9 Nov 2004US 6,814,867 B2Inuista North America S.àr.l.
- Process to recover metals from spent catalyst30 Jan 2001US 6,180,072 B2Shell Oil Company
- Method and apparatus for separating copper from chromite27 Oct 1992US 5,158,602 ADiversified Recycling Technology
- Pyrometallurgical process and plant for selective recycling of molybdenum in the reprocessing of spent petrochemical catalysts29 Jan 2026US 2026/0028697 A1Eco'ring
- Process for separating and recovering base metals from used hydroprocessing catalyst28 May 2009US 2009/0136400 A1Chevron U. S. A. Inc.
- Process for reducing chromium nonvolatile residue resulting from air oxidation of cyclohexane18 Mar 2004US 2004/0050780 A1Inuista North America S.àr.l.
Most cited
By later US patents
- Process to recover metals from spent catalyst31US 6,180,072 B2Shell Oil Company · 2001
- Process for separating and recovering base metals from used hydroprocessing catalyst26US 7,837,960 B2Chevron U.S.A.Inc. · 2010
- Process for reducing chromium in nonvolatile residue resulting from air oxidation of cyclohexane1US 6,814,867 B2Inuista North America S.àr.l. · 2004