F23J 2215/60
Heavy metals
Official title: Heavy metals; Compounds thereof
F23J2215/60 (Heavy metals) appears on 203 US grants and 198 published applications in this corpus.
Search patents in F23J- Granted patents
- 203
- Published applications
- 198
- Assignees
- 113
- Inventors
- 373
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 7 |
| 2003 | 7 | 4 |
| 2004 | 2 | 6 |
| 2005 | 8 | 9 |
| 2006 | 5 | 5 |
| 2007 | 1 | 5 |
| 2008 | 6 | 17 |
| 2009 | 15 | 11 |
| 2010 | 16 | 17 |
| 2011 | 11 | 17 |
| 2012 | 11 | 8 |
| 2013 | 14 | 12 |
| 2014 | 7 | 12 |
| 2015 | 13 | 13 |
| 2016 | 4 | 8 |
| 2017 | 8 | 8 |
| 2018 | 6 | 12 |
| 2019 | 7 | 8 |
| 2020 | 10 | 3 |
| 2021 | 4 | 4 |
| 2022 | 3 | 3 |
| 2023 | 1 | 2 |
| 2024 | 2 | 3 |
| 2025 | 0 | 0 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for controlling mercury emissions from coal-fired thermal processes26 May 2026US 12,636,611 B2ARQ Solutions (ES), INC.
- Systems and methods for removal of mercury and/or hydrochloric acid from gas streams using calcium-containing particles6 Jan 2026US 12,515,165 B2Graymont (PA) Inc.
- Systems and methods for removal of mercury and/or hydrochloric acid from gas streams using calcium-containing particles30 Jan 2024US 11,883,776 B2Graymont (PA) Inc.
- Mitigation of mercury vapor emissions9 Jan 2024US 11,865,496 B2W. L. Gore & Associates, Inc.
- Reducing mercury emissions from the burning of coal by remote sorbent addition22 Aug 2023US 11,732,889 B2NOx II, Ltd.
- 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
- Melting furnace13 Aug 2026US 2026/0235363 A1Kubota Corporation
- Systems and methods for removal of mercury and/or hydrochloric acid from gas streams using calcium-containing particles2 Jul 2026US 2026/0183699 A1Graymont (PA) Inc.
- Systems and methods for removal of mercury and/or hydrochloric acid from gas streams using calcium-containing particles7 Nov 2024US 2024/0367090 A1Graymont (PA) Inc.
- Combustion system using, as an oxidizer, a mixture of molecular oxygen and a dehumidified gas obtained from combustion fumes13 Jun 2024US 2024/0191872 A1Carbodown
Most cited
By later US patents
- Thief process for the removal of mercury from flue gas141US 6,521,021 B1The United States of America as represented by the United States Department of Energy · 2003
- Control of mercury emissions from solid fuel combustion141US 6,848,374 B2ALSTOM Technology Ltd · 2005
- Flue gas control system of coal combustion boiler and operating method thereof122US 8,071,060 B2Mitsubishi Heavy Industries, Ltd. · 2011
- Method for the removal of mercury and nitrogen oxides from combustion flue gas121US 6,375,909 B1Infilco Degremont Inc. · 2002
- System and process for removal of pollutants from a gas stream101US 6,610,263 B2EnviroScrub Technologies Corporation · 2003