F01N 2570/20
Formaldehyde
F01N2570/20 (Formaldehyde) appears on 3 US grants and 5 published applications in this corpus.
Search patents in F01N- Granted patents
- 3
- Published applications
- 5
- Assignees
- 4
- Inventors
- 11
- Latest grant
- 22 Jan 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 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 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus and method for desulfation of a catalyst used in a lean burn methane source fueled combustion system22 Jan 2019US 10,184,374 B2Umicore AG & Co. KG
- Exhaust gas purifier for methanol-fueled engines14 Dec 1993US 5,269,140 ANichias Corporation
- Exhaust gas purifying device for a diesel engine19 Nov 1991US 5,065,576 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho
- Aldehyde decomposition catalyst, exhaust gas treatment apparatus, and exhaust gas treatment method23 Jul 2020US 2020/0230584 A1Hitachi Zosen Corporation
- Apparatus and method for desulfation of a catalyst used in a lean burn methane source fueled combustion system19 Dec 2019US 2019/0383185 A1Umicore AG & Co. KG
- Apparatus and method for desulfation of a catalyst used in a lean burn methane source fueled combustion system23 Aug 2018US 2018/0238216 A1Umicore AG & Co. KG
- Aldehyde decomposition catalyst, exhaust gas treatment apparatus, and exhaust gas treatment method23 Nov 2017US 2017/0333885 A1Hitachi Zosen Corporation
- Formaldehyde Emission Reduction in Natural Gas Fired Reciprocating Internal Combustion Engines (RICE)10 Sep 2015US 2015/0251136 A1
Most cited
By later US patents
- Exhaust gas purifying device for a diesel engine29US 5,065,576 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho · 1991
- Exhaust gas purifier for methanol-fueled engines8US 5,269,140 ANichias Corporation · 1993
- Apparatus and method for desulfation of a catalyst used in a lean burn methane source fueled combustion system6US 10,184,374 B2Umicore AG & Co. KG · 2019