F23J 2215/101
Nitrous oxide
Official title: Nitrous oxide (N2O)
F23J2215/101 (Nitrous oxide) appears on 53 US grants and 54 published applications in this corpus.
Search patents in F23J- Granted patents
- 53
- Published applications
- 54
- Assignees
- 51
- Inventors
- 179
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 4 |
| 2009 | 1 | 4 |
| 2010 | 2 | 6 |
| 2011 | 4 | 6 |
| 2012 | 2 | 3 |
| 2013 | 3 | 1 |
| 2014 | 6 | 0 |
| 2015 | 1 | 2 |
| 2016 | 2 | 3 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 0 |
| 2020 | 1 | 2 |
| 2021 | 3 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 5 |
| 2025 | 0 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust gas treatment facility12 May 2026US 12,623,187 B2IHI Corporation
- Flue cap with filter7 Nov 2023US 11,808,451 B1
- System and method for reducing the visibility of exhaust emissions in a gas turbine system7 Mar 2023US 11,598,225 B2General Electric Company
- Exhaust gas treatment device and exhaust gas treatment method1 Feb 2022US 11,236,907 B2Mitsubishi Heavy Industries Engineering, Ltd.
- Exhaust gas treatment device and exhaust gas treatment method28 Dec 2021US 11,209,165 B2Mitsubishi Heavy Industries Engineering, Ltd.
- 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
- Gas processing apparatus using catalyst30 Oct 2025US 2025/0332542 A1Ennopia
- Catalyst system for removing perfluorinated compounds and nitrous oxide30 Oct 2025US 2025/0332574 A1Ennopia
- Carbon dioxide and sulfur oxide capture and carbon resource conversion system for coal-fired power generation20 Mar 2025US 2025/0090993 A1Lowcarbon Co., Ltd.
Most cited
By later US patents
- Low NO.sub.x cogeneration process and system39US 5,224,334 ARadian Corporation · 1993
- Process and apparatus for the thermal decomposition of nitrous oxide27US 5,048,432 ANalco Fuel Tech · 1991
- Method for NOx reduction by upper furnace injection of biofuel water slurry27US 6,357,367 B1Energy Systems Associates · 2002
- Simplified efficient process for reducing NO.sub.x, SO.sub.x, and particulates24US 5,658,547 ANalco Fuel Tech · 1997
- Recycle TSA regen gas to boiler for oxyfuel operations22US 8,012,446 B1Air Products and Chemicals, Inc. · 2011