F23N 2900/05003
Measuring nox content in flue gas
Official title: Measuring NOx content in flue gas
F23N2900/05003 (Measuring nox content in flue gas) appears on 36 US grants and 57 published applications in this corpus.
Search patents in F23N- Granted patents
- 36
- Published applications
- 57
- Assignees
- 37
- Inventors
- 143
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 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 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 3 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 2 | 3 |
| 2013 | 0 | 1 |
| 2014 | 3 | 3 |
| 2015 | 1 | 4 |
| 2016 | 3 | 2 |
| 2017 | 1 | 1 |
| 2018 | 3 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 4 |
| 2021 | 1 | 2 |
| 2022 | 1 | 6 |
| 2023 | 5 | 5 |
| 2024 | 2 | 5 |
| 2025 | 2 | 5 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for controlling a combustion device17 Feb 2026US 12,553,606 B2Siemens Energy Global GmbH & Co. KG
- Flare systems emissions analyzer6 Jan 2026US 12,516,810 B2Saudi Arabian Oil Company
- Combustion method for controlling and monitoring exhaust gas emissions in boilers6 Jan 2026US 12,516,813 B2Oriental Giant Dyes & Chemical Ind. Corp.
- Method for reducing combustion temperature and thermal radiation within a lime kiln9 Dec 2025US 12,492,818 B2
- Methods and systems for minimizing NOx and CO emissions in natural draft heaters1 Jul 2025US 12,345,416 B2Marathon Petroleum Company LP
- Enhanced sensors for heating operations16 Jul 2026US 2026/0202332 A1
- Avoiding of emissions in the production of artificial pozzolans made of mineral material, in particular clays9 Apr 2026US 2026/0097990 A1thyssenkrupp AG
- Method and Apparatus for Detecting a Threshold Deviation from Clean Combustion in a Residential Gas Heater Assembly26 Feb 2026US 2026/0055891 A1
- Low nox emission burner for firing liquid fuels or fuel gas and method of operation18 Dec 2025US 2025/0383088 A1Honeywell International Inc.
- Exhaust gas composition characterization in combustion systems16 Oct 2025US 2025/0321003 A1Clean Connect AI, Inc.
Most cited
By later US patents
- Method and system for incorporating an emission sensor into a gas turbine controller100US 7,032,388 B2General Electric Company · 2006
- Charge-induced selective reduction of nitrogen51US 8,911,699 B2Clearsign Combustion Corporation · 2014
- Combustion system and method with fog injection and heat exchange43US 4,773,846 A1988
- Automatic combustion control for a gas turbine32US 6,742,341 B2Siemens Westinghouse Power Corporation · 2004
- Method and system for incorporating an emission sensor into a gas turbine controller29US 7,127,898 B2General Electric Company · 2006