F01N 2240/38
An ozone generator
Official title: an ozone (O3) generator, e.g. for adding ozone after generation of ozone from air
F01N2240/38 (An ozone generator) appears on 51 US grants and 80 published applications in this corpus.
Search patents in F01N- Granted patents
- 51
- Published applications
- 80
- Assignees
- 27
- Inventors
- 108
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 2 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 4 |
| 2005 | 2 | 2 |
| 2006 | 2 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 2 | 8 |
| 2010 | 2 | 9 |
| 2011 | 3 | 1 |
| 2012 | 3 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 4 | 6 |
| 2016 | 5 | 3 |
| 2017 | 2 | 1 |
| 2018 | 2 | 3 |
| 2019 | 3 | 3 |
| 2020 | 0 | 2 |
| 2021 | 1 | 14 |
| 2022 | 1 | 11 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for reducing internal combustion engine emissions23 Sep 2025US 12,421,881 B2Saudi Arabian Oil Company
- Purification system25 Mar 2025US 12,258,897 B2Isuzu Motors Limited
- Reduced internal combustion engine particulate matter emissions18 Mar 2025US 12,253,014 B1Saudi Arabian Oil Company
- Exhaust gas treatment system with improved low temperature performance14 Nov 2023US 11,815,000 B2Deere & Company
- Use of ozone with LNT and MnO2 catalyst for the treatment of residual pollutant for the exhaust gas of an internal engine combustion13 Sep 2022US 11,441,464 B2Saudi Arabian Oil Company
- System and method for reducing internal combustion engine emissions28 Nov 2024US 2024/0392711 A1Aramco Overseas Company B.V.
- Purification system19 Sep 2024US 2024/0309790 A1Isuzu Motors Limited
- Exhaust gas treatment system with improved low temperature performance15 Sep 2022US 2022/0290599 A1Deere & Company
- Exhaust gas processing system and method1 Sep 2022US 2022/0275739 A1Shanghai Bixiufu Enterprise Management Co., Ltd.
- Engine exhaust dust removing system and method11 Aug 2022US 2022/0250087 A1Shanghai Bixiufu Enterprise Management Co., Ltd.
Most cited
By later US patents
- Method and apparatus for treating exhaust gas from vehicles58US 6,212,883 B1Moon-Ki Cho · 2001
- Process for removing No.sub.x and So.sub.x from exhaust gas42US 6,162,409 A2000
- Combatting air pollution34US 6,546,717 B1Johnson Matthey Public Limited Company · 2003
- Method and apparatus for using hydroxyl to reduce pollutants in the exhaust gases from the combustion of a fuel28US 6,048,500 ALitex, Inc. · 2000
- Method for using hydroxyl radical to reduce pollutants in the exhaust gases from the combustion of a fuel25US 5,863,413 ALitex, Inc. · 1999