C22B 11/00
Obtaining noble metals
C22B11/00 (Obtaining noble metals) appears on 1,482 US grants and 1,139 published applications in this corpus.
Search patents in C22B- Granted patents
- 1,482
- Published applications
- 1,139
- Assignees
- 929
- Inventors
- 3,329
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 20 | 0 |
| 1978 | 34 | 0 |
| 1979 | 17 | 0 |
| 1980 | 15 | 0 |
| 1981 | 23 | 0 |
| 1982 | 20 | 0 |
| 1983 | 30 | 0 |
| 1984 | 24 | 0 |
| 1985 | 22 | 0 |
| 1986 | 28 | 0 |
| 1987 | 29 | 0 |
| 1988 | 27 | 0 |
| 1989 | 22 | 0 |
| 1990 | 30 | 0 |
| 1991 | 29 | 0 |
| 1992 | 31 | 0 |
| 1993 | 39 | 0 |
| 1994 | 41 | 0 |
| 1995 | 32 | 0 |
| 1996 | 18 | 0 |
| 1997 | 28 | 0 |
| 1998 | 24 | 0 |
| 1999 | 34 | 0 |
| 2000 | 34 | 0 |
| 2001 | 31 | 10 |
| 2002 | 44 | 21 |
| 2003 | 24 | 40 |
| 2004 | 25 | 42 |
| 2005 | 13 | 40 |
| 2006 | 23 | 30 |
| 2007 | 17 | 33 |
| 2008 | 13 | 43 |
| 2009 | 29 | 63 |
| 2010 | 34 | 43 |
| 2011 | 36 | 31 |
| 2012 | 29 | 37 |
| 2013 | 28 | 37 |
| 2014 | 22 | 47 |
| 2015 | 40 | 58 |
| 2016 | 36 | 68 |
| 2017 | 43 | 48 |
| 2018 | 39 | 47 |
| 2019 | 49 | 50 |
| 2020 | 40 | 41 |
| 2021 | 26 | 42 |
| 2022 | 36 | 48 |
| 2023 | 35 | 62 |
| 2024 | 28 | 61 |
| 2025 | 31 | 56 |
| 2026 | 28 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gas-Assisted Microflow Extraction (GAME) system patent6 Oct 2026US 12,753,463 B2Phinix, LLC
- Integrated recovery of metals from complex substrates22 Sep 2026US 12,742,224 B2Yava International Inc.
- Method for recovering noble metals from catalytic converter15 Sep 2026US 12,735,768 B2National Ilan University
- Method for recovering metal from metal element-containing substance1 Sep 2026US 12,723,291 B2IHI Corporation
- Processing method for electronic/electric device component waste25 Aug 2026US 12,715,026 B2JX Advanced Metals Corporation
- Process for recovering platinum-group metal from waste catalyst by using biocyanide and ionic liquid8 Oct 2026US 2026/0308713 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Pincer-type diphenyl sulfide compound, and preparation method and use thereof1 Oct 2026US 2026/0297025 A1Hunan Institute of Science and Technology
- Hydrometallurgical Process for Recovering Palladium from a Spent Catalyst24 Sep 2026US 2026/0286463 A1Peroxidos Do Brasil Ltda
- Method for producing palladium from ag slime17 Sep 2026US 2026/0275453 A1Korea Zinc Co., Ltd.
- Method for selectively recovering volatile pt or pd10 Sep 2026US 2026/0265057 A1Yara International Asa
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 recovery of gold from refractory ores by pressure oxidation70US 4,552,589 AGetty Oil Company · 1985
- Apparatus for enhancing chemical reactions69US 4,168,295 A1979
- Process and apparatus for generating bromine68US 5,679,239 AElectrocatalytic, Inc. · 1997
- Three media silver recovery apparatus67US 6,096,209 AAcademy, Ltd. · 2000