F23D 14/68
Treating the combustion air or gas
Official title: Treating the combustion air or gas, e.g. by filtering, or moistening
F23D14/68 (Treating the combustion air or gas) appears on 53 US grants and 59 published applications in this corpus.
Search patents in F23D- Granted patents
- 53
- Published applications
- 59
- Assignees
- 45
- Inventors
- 131
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 2 |
| 2003 | 2 | 3 |
| 2004 | 2 | 6 |
| 2005 | 5 | 0 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 5 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 3 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 3 |
| 2017 | 1 | 4 |
| 2018 | 1 | 2 |
| 2019 | 5 | 3 |
| 2020 | 2 | 5 |
| 2021 | 1 | 3 |
| 2022 | 1 | 3 |
| 2023 | 2 | 3 |
| 2024 | 4 | 1 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process and burner for the thermal disposal of pollutants in process gases14 Apr 2026US 12,601,479 B2DAS Environmental Expert GmbH
- Method and device to reduce emissions of nitrogen oxides and increase heat transfer in fired process heaters21 Oct 2025US 12,449,124 B2XRG Technologies, LLC
- Industrial premixed gas combustor using internal exhaust gas recirculation and operating method thereof12 Aug 2025US 12,385,431 B2Korea Institute of Energy Research
- Low-concentration gas differential combustion device18 Mar 2025US 12,253,261 B2Beijing Junfa Combustible Gas Technology Development Co., Ltd.
- Removable filter system3 Dec 2024US 12,157,082 B2
- Removable filter system6 Feb 2025US 2025/0041778 A1
- Industrial premixed gas combustor using internal exhaust gas recirculation and operating method thereof29 Aug 2024US 2024/0288157 A1Korea Institute of Energy Research
- Removable filter system25 May 2023US 2023/0158437 A1
- Method and device to reduce emissions of nitrogen oxides and increase heat transfer in fired process heaters18 May 2023US 2023/0151959 A1XRG Technologies, LLC
- Process and Burner for the Thermal Disposal of Pollutants in Process Gases4 May 2023US 2023/0139785 A1DAS Environmental Expert GmbH
Most cited
By later US patents
- Fuel-conditioning skid147US 7,442,239 B2Ingersoll-Rand Energy Systems Corporation · 2008
- Gas grill with insect deterrent37US 4,829,978 AWeber-Stephen Products LLC · 1989
- Process and apparatus for control of NOx in catalytic combustion systems35US 6,595,003 B22003
- Combustion method and apparatus for NOx reduction24US 6,875,009 B2Miura Co., Ltd. · 2005
- Method and apparatus to homogenize fuel and diluent for reducing emissions in combustion systems21US 6,418,724 B1Cheng Power Systems, Inc. · 2002