C22B 34/34
Obtaining molybdenum
Official title: Obtaining molybdenum {(treatment or purification of solutions by adsorption on solids C22B3/24, by liquid-liquid extraction C22B3/26, by ion-exchange extraction C22B3/42; preparation of molybdenum involving liquid-liquid extraction, adsorption or ion-exchange C01G39/003)}
C22B34/34 (Obtaining molybdenum) appears on 257 US grants and 157 published applications in this corpus.
Search patents in C22B- Granted patents
- 257
- Published applications
- 157
- Assignees
- 165
- Inventors
- 560
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 15 | 0 |
| 1984 | 17 | 0 |
| 1985 | 12 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 1 |
| 2003 | 2 | 5 |
| 2004 | 2 | 4 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 5 | 5 |
| 2008 | 1 | 5 |
| 2009 | 4 | 11 |
| 2010 | 10 | 10 |
| 2011 | 2 | 13 |
| 2012 | 8 | 12 |
| 2013 | 9 | 14 |
| 2014 | 4 | 8 |
| 2015 | 11 | 10 |
| 2016 | 10 | 7 |
| 2017 | 7 | 2 |
| 2018 | 7 | 5 |
| 2019 | 6 | 7 |
| 2020 | 5 | 5 |
| 2021 | 5 | 5 |
| 2022 | 2 | 7 |
| 2023 | 4 | 6 |
| 2024 | 2 | 3 |
| 2025 | 6 | 5 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquefaction process6 Oct 2026US 12,753,353 B1
- Metals recovery from spent catalyst11 Aug 2026US 12,703,892 B2Chevron U.S.A.Inc.
- Method for producing copper metal from copper concentrates without generating waste26 May 2026US 12,637,738 B2Universidad De Concepcion
- 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.
- Mining chemical collector compositions and processes for recovering metal from ore1 Oct 2026US 2026/0295598 A1Chevron Phillips Chemical Company LP
- Pyrometallurgical process and plant for selective recycling of molybdenum in the reprocessing of spent petrochemical catalysts29 Jan 2026US 2026/0028697 A1Eco'ring
- Methods and systems of acid-base leaching for industrial byproducts11 Sep 2025US 2025/0283191 A1Sublime Systems, Inc.
- Magnetic separation of particles supported by specific surfactants4 Sep 2025US 2025/0276328 A1BASF SE
- Low temperature reduction of metal oxides5 Jun 2025US 2025/0179609 A1Kinaltek Pty. Ltd.
Most cited
By later US patents
- Method for induction melting reactive metals and alloys54US 4,738,713 AThe Duriron Company, Inc. · 1988
- Process for recovering molybdenum, vanadium, cobalt and nickel from roasted products of used catalysts from hydrotreatment desulfurization of petroleum48US 4,145,397 AFuji Fine Chemical Co. Ltd. · 1979
- Process for producing high-purity metal targets for LSI electrodes38US 4,619,695 ANihon Kogyo Kabushiki Kaisha · 1986
- Method for maintaining fluidization in a fluidized bed reactor35US 5,125,965 ACyprus Minerals Company · 1992
- Metal or alloy forming reduction process and apparatus33US 4,687,632 A1987