C22B 11/02
Obtaining noble metals: by dry processes
Official title: by dry processes
C22B11/02 (Obtaining noble metals: by dry processes) appears on 227 US grants and 193 published applications in this corpus.
Search patents in C22B- Granted patents
- 227
- Published applications
- 193
- Assignees
- 193
- Inventors
- 629
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 0 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 1 |
| 2002 | 10 | 0 |
| 2003 | 4 | 7 |
| 2004 | 6 | 10 |
| 2005 | 1 | 11 |
| 2006 | 4 | 7 |
| 2007 | 1 | 5 |
| 2008 | 4 | 9 |
| 2009 | 4 | 8 |
| 2010 | 5 | 7 |
| 2011 | 3 | 7 |
| 2012 | 8 | 11 |
| 2013 | 7 | 9 |
| 2014 | 4 | 10 |
| 2015 | 9 | 9 |
| 2016 | 9 | 4 |
| 2017 | 4 | 10 |
| 2018 | 3 | 7 |
| 2019 | 10 | 14 |
| 2020 | 8 | 6 |
| 2021 | 3 | 4 |
| 2022 | 6 | 8 |
| 2023 | 4 | 8 |
| 2024 | 6 | 8 |
| 2025 | 4 | 4 |
| 2026 | 6 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Processing method for electronic/electric device component waste25 Aug 2026US 12,715,026 B2JX Advanced Metals Corporation
- Ultrafast flash joule heating synthesis methods and systems for performing same11 Aug 2026US 12,703,891 B2William Marsh Rice University
- Method, apparatus and system for processing a composite waste source26 May 2026US 12,637,737 B2NewSouth Innovations Pty Limited
- Method for breaking down a mixture of solid particles comprising ruthenium28 Apr 2026US 12,612,679 B2Heraeus Deutschland GmbH & Co. KG
- Platinum catalyst recycling device with multiple filtration structures14 Apr 2026US 12,599,945 B2Yulin University
- Method for selectively recovering volatile pt or pd10 Sep 2026US 2026/0265057 A1Yara International Asa
- Full hydrometallurgical process for recovering multiple metals from complex rare and precious material16 Jul 2026US 2026/0201500 A1Copper Branch Company of Yunnan Tin Company Lmited
- A method of treating a silicon carbide bearing material25 Jun 2026US 2026/0176714 A1Sibanye Stillwater Limited
- Method of metal recovery11 Jun 2026US 2026/0159916 A1Alderley Gold Corp.
- Method for fire refining of complex crude lead21 May 2026US 2026/0139341 A1Kunming University of Science and Technology
Most cited
By later US patents
- Process for plasma synthesis of rhenium nano and micro powders, and for coatings and near net shape deposits thereof and apparatus therefor73US 7,494,527 B2Tekna Plasma Systems Inc. · 2009
- Process for the manufacture of nitric oxide64US 4,774,069 AJohnson Matthey Public Limited Company · 1988
- Process for the extraction of platinum group metals62US 4,685,963 ATexasgulf Minerals and Metals, Inc. · 1987
- Extraction of trace metals from fly ash43US 4,475,993 AThe United States of America as represented by the United States Department of Energy · 1984
- Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material38US 6,401,635 B1Corenso United Oy Ltd. · 2002