F01N 13/0093
The purifying devices are of the same type
Official title: {the purifying devices are of the same type}
F01N13/0093 (The purifying devices are of the same type) appears on 845 US grants and 962 published applications in this corpus.
Search patents in F01N- Granted patents
- 845
- Published applications
- 962
- Assignees
- 241
- Inventors
- 1,764
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 20 | 8 |
| 2002 | 26 | 26 |
| 2003 | 26 | 45 |
| 2004 | 33 | 42 |
| 2005 | 31 | 37 |
| 2006 | 22 | 47 |
| 2007 | 25 | 46 |
| 2008 | 19 | 54 |
| 2009 | 33 | 40 |
| 2010 | 34 | 48 |
| 2011 | 32 | 60 |
| 2012 | 40 | 24 |
| 2013 | 33 | 28 |
| 2014 | 37 | 33 |
| 2015 | 37 | 47 |
| 2016 | 30 | 27 |
| 2017 | 37 | 59 |
| 2018 | 41 | 51 |
| 2019 | 46 | 38 |
| 2020 | 39 | 39 |
| 2021 | 47 | 28 |
| 2022 | 33 | 50 |
| 2023 | 38 | 23 |
| 2024 | 31 | 27 |
| 2025 | 23 | 20 |
| 2026 | 12 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Saddle-type vehicle with exhaust pipe catalyst arrangement15 Sep 2026US 12,736,004 B2Kawasaki Motors, Ltd.
- Internal combustion engine system15 Sep 2026US 12,736,016 B2Toyota Jidosha Kabushiki Kaisha
- Work vehicle and aftertreatment system therefor25 Aug 2026US 12,716,375 B2Deere & Company
- Multiple heater exhaust aftertreatment system architecture and methods of control thereof9 Jun 2026US 12,650,088 B2Cummins Inc.
- Systems and methods for detecting degradation of catalyst members of an aftertreatment system26 May 2026US 12,637,969 B2Cummins Emission Solutions Inc.
- Exhaust aftertreatment system24 Sep 2026US 2026/0286878 A1Donaldson Company, Inc.
- Exhaust system and features thereof27 Aug 2026US 2026/0251080 A1ECC TEC MSJ Incorporated
- Engine Assembly20 Aug 2026US 2026/0241341 A1Perkins Engines Company Limited
- Aftertreatment system nox and ammonia control strategy13 Aug 2026US 2026/0235059 A1Cummins Inc.
- Decomposition chamber for aftertreatment system13 Aug 2026US 2026/0235063 A1Cummins Emission Solutions Inc.
Most cited
By later US patents
- Exhaust purification device of internal combustion engine199US 5,473,887 AToyota Jidosha Kabushiki Kaisha · 1995
- Staged reductant injection for improved NO.sub.x reduction157US 6,125,629 AEngelhard Corporation · 2000
- Plasma fuel processing for NOx control of lean burn engines101US 6,176,078 B1Engelhard Corporation · 2001
- Selective catalytic reduction101US 7,264,785 B2Johnson Matthey Public Limited Company · 2007
- Exhaust gas aftertreatment systems96US 6,928,806 B2Ford Global Technologies, LLC · 2005