B01D 2257/60
Heavy metals or heavy metal compounds
B01D2257/60 (Heavy metals or heavy metal compounds) appears on 1,049 US grants and 1,278 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,049
- Published applications
- 1,278
- Assignees
- 567
- Inventors
- 2,005
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 0 |
| 2002 | 7 | 13 |
| 2003 | 15 | 17 |
| 2004 | 7 | 21 |
| 2005 | 14 | 30 |
| 2006 | 17 | 35 |
| 2007 | 13 | 38 |
| 2008 | 25 | 56 |
| 2009 | 42 | 72 |
| 2010 | 56 | 96 |
| 2011 | 50 | 84 |
| 2012 | 67 | 77 |
| 2013 | 84 | 72 |
| 2014 | 75 | 79 |
| 2015 | 60 | 74 |
| 2016 | 52 | 79 |
| 2017 | 64 | 59 |
| 2018 | 56 | 95 |
| 2019 | 63 | 73 |
| 2020 | 60 | 38 |
| 2021 | 46 | 42 |
| 2022 | 39 | 32 |
| 2023 | 23 | 30 |
| 2024 | 30 | 29 |
| 2025 | 22 | 24 |
| 2026 | 11 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flue gas purification system for hazardous waste incineration and purification method25 Aug 2026US 12,714,969 B2Chongqing Greening Environmental Protection Co. Ltd
- Carbon dioxide capture device and method16 Jun 2026US 12,654,124 B2Enviro Ambient Corporation
- Industrial air pollution removal system26 May 2026US 12,636,605 B2
- Method and system for controlling mercury emissions from coal-fired thermal processes26 May 2026US 12,636,611 B2ARQ Solutions (ES), INC.
- Electrochemical cell exhaust management system19 May 2026US 12,633,559 B2Robert Bosch GmbH
- Method of filtration of particulated systems with injection of nanobubbles, and, use8 Oct 2026US 2026/0306978 A1Universidade Federal Do Rio Grande Do Sul—Ufrgs
- Method and device for separating a carbon dioxide-containing gas by partial condensation and/or distillation and/or solidification8 Oct 2026US 2026/0306989 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Apparatus and method for exhaust gas pollution reduction17 Sep 2026US 2026/0273462 A1Mercury Capture Intellectual Property, LLC
- Carbon dioxide capture device10 Sep 2026US 2026/0263985 A1Toyota Jidosha Kabushiki Kaisha
- Method for selectively recovering volatile pt or pd10 Sep 2026US 2026/0265057 A1Yara International Asa
Most cited
By later US patents
- Flue gas mercury control214US 8,080,088 B12011
- Sorbents and methods for the removal of mercury from combustion gases199US 6,953,494 B22005
- High capacity regenerable sorbent for removal of mercury from flue gas191US 6,719,828 B12004
- System and method for sequestration and separation of mercury in combustion exhaust gas aqueous scrubber systems182US 7,722,843 B12010
- Mercury removal apparatus and method176US 5,409,522 AADA Technologies, Inc. · 1995