F23J 2215/10
Nitrogen
Official title: Nitrogen; Compounds thereof
F23J2215/10 (Nitrogen) appears on 287 US grants and 270 published applications in this corpus.
Search patents in F23J- Granted patents
- 287
- Published applications
- 270
- Assignees
- 226
- Inventors
- 802
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 13 | 0 |
| 2001 | 5 | 1 |
| 2002 | 9 | 6 |
| 2003 | 5 | 8 |
| 2004 | 2 | 9 |
| 2005 | 8 | 10 |
| 2006 | 6 | 4 |
| 2007 | 1 | 1 |
| 2008 | 5 | 10 |
| 2009 | 3 | 7 |
| 2010 | 6 | 16 |
| 2011 | 16 | 16 |
| 2012 | 5 | 14 |
| 2013 | 8 | 19 |
| 2014 | 19 | 16 |
| 2015 | 9 | 19 |
| 2016 | 10 | 15 |
| 2017 | 12 | 10 |
| 2018 | 16 | 14 |
| 2019 | 9 | 7 |
| 2020 | 9 | 8 |
| 2021 | 5 | 15 |
| 2022 | 7 | 13 |
| 2023 | 10 | 8 |
| 2024 | 9 | 10 |
| 2025 | 5 | 11 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Combustion device and boiler14 Jul 2026US 12,680,692 B2IHI Corporation
- Exhaust gas treatment facility12 May 2026US 12,623,187 B2IHI Corporation
- Methods for regenerating a filter medium and cleaning flue gas7 Apr 2026US 12,594,519 B2W. L. Gore & Associates, Inc.
- Method for reducing combustion temperature and thermal radiation within a lime kiln9 Dec 2025US 12,492,818 B2
- 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
- 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
- Method for reducing nitrogen oxide emission and combustion system16 Jul 2026US 2026/0202054 A1China Petroleum & Chemical Corporation
- System and method of gas treatment with biochar sorbent system in power plant15 Jan 2026US 2026/0014541 A1GE Infrastructure Technology LLC
- Combustion system able to operate with recycling of the combustion gas27 Nov 2025US 2025/0362016 A1Carbodown
- Gas processing apparatus using catalyst30 Oct 2025US 2025/0332542 A1Ennopia
Most cited
By later US patents
- Method for the removal of mercury and nitrogen oxides from combustion flue gas121US 6,375,909 B1Infilco Degremont Inc. · 2002
- Integrated injection and bag filter house system for SO.sub.x -NO.sub.x -particulate control with reagent/catalyst regeneration115US 4,793,981 AThe Babcock & Wilcox Company · 1988
- System and process for removal of pollutants from a gas stream101US 6,610,263 B2EnviroScrub Technologies Corporation · 2003
- System for treating and recovering energy from exhaust gases100US 4,126,000 A1978
- Method and apparatus for removing pollutants from flue gas84US 5,467,722 A1995