F23K 2900/01001
Cleaning solid fuel before combustion to achieve reduced emissions
F23K2900/01001 (Cleaning solid fuel before combustion to achieve reduced emissions) appears on 10 US grants and 10 published applications in this corpus.
Search patents in F23K- Granted patents
- 10
- Published applications
- 10
- Assignees
- 7
- Inventors
- 31
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 3 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pretreatment desulfurization system for reducing sulfur content of coal by immersing coal in catalyst10 Feb 2026US 12,545,848 B2Lowcarbon Co., Ltd.
- Use of contaminated low-rank coal for combustion3 May 2016US 9,328,920 B2Greatpoint Energy, Inc.
- System and method for purifying solid carboniferous fuels, using a rotary chamber, prior to chemical looping combustion2 Jun 2015US 9,045,696 B2
- Methods and systems for briquetting solid fuel19 Nov 2013US 8,585,786 B2CoalTek, Inc.
- Methods and systems for processing solid fuel19 Nov 2013US 8,585,788 B2CoalTek, Inc.
- Pretreatment desulfurization system for reducing sulfur content of coal by immersing coal in catalyst16 Nov 2023US 2023/0365881 A1Lowcarbon Co., Ltd.
- Use of contaminated low-rank coal for combustion3 Apr 2014US 2014/0090584 A1Greatpoint Energy, Inc.
- System and method for purifying solid carboniferous fuels, using a rotary chamber, prior to chemical looping combustion24 Oct 2013US 2013/0277198 A1
- Method for reducing air flow when operating a coal burner31 Jan 2013US 2013/0025514 A1Headwaters Energy Services Corporation
- Method for reducing nox during combustion of coal in a burner by optimizing combustion air flow4 Feb 2010US 2010/0024698 A1Headwaters Energy Services Corporation
Most cited
By later US patents
- Separation of pyrite from coal in a fluidized bed20US 5,197,398 AElectric Power Research Institute, Inc. · 1993
- Apparatus and method of separating and concentrating organic and/or non-organic material14US 7,540,384 B2Great River Energy · 2009
- Use of contaminated low-rank coal for combustion10US 9,328,920 B2Greatpoint Energy, Inc. · 2016
- Methods and systems for processing solid fuel9US 8,585,788 B2CoalTek, Inc. · 2013
- Methods and systems for briquetting solid fuel8US 8,585,786 B2CoalTek, Inc. · 2013