F01N 2450/30
Removable or rechangeable blocks or cartridges
Official title: Removable or rechangeable blocks or cartridges, e.g. for filters
F01N2450/30 (Removable or rechangeable blocks or cartridges) appears on 241 US grants and 224 published applications in this corpus.
Search patents in F01N- Granted patents
- 241
- Published applications
- 224
- Assignees
- 139
- Inventors
- 563
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 5 |
| 2003 | 7 | 3 |
| 2004 | 1 | 6 |
| 2005 | 1 | 9 |
| 2006 | 1 | 10 |
| 2007 | 7 | 6 |
| 2008 | 7 | 6 |
| 2009 | 4 | 5 |
| 2010 | 3 | 10 |
| 2011 | 7 | 10 |
| 2012 | 7 | 10 |
| 2013 | 7 | 13 |
| 2014 | 8 | 13 |
| 2015 | 19 | 14 |
| 2016 | 5 | 9 |
| 2017 | 11 | 12 |
| 2018 | 8 | 16 |
| 2019 | 14 | 9 |
| 2020 | 14 | 13 |
| 2021 | 13 | 13 |
| 2022 | 7 | 7 |
| 2023 | 8 | 9 |
| 2024 | 8 | 6 |
| 2025 | 9 | 3 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aftertreatment system for locomotive17 Feb 2026US 12,553,372 B2Caterpillar Inc.
- Process for replacing a core of diesel emission control device23 Dec 2025US 12,502,663 B2DET Diesel Emission Technologies, LLC
- Tunable exhaust system16 Dec 2025US 12,497,913 B2Advanced Flow Engineering, Inc.
- Aftertreatment component cartridge for an aftertreatment system7 Oct 2025US 12,435,659 B2Cummins Emission Solutions Inc.
- Manifold assembly for trap filter systems23 Sep 2025US 12,420,225 B2Intel Corporation
- Systems, methods, and apparatuses for adsorbing carbon from engine exhaust gases1 Oct 2026US 2026/0298120 A1CO2 Filter, LLC
- Exhaust aftertreatment system with filter cartridge assembly14 May 2026US 2026/0132728 A1Cummins Emission Solutions Inc.
- Tunable Exhaust System2 Apr 2026US 2026/0092544 A1Advanced Flow Engineering, Inc.
- System and method for removing a core of diesel emission control device19 Feb 2026US 2026/0048388 A1Diesel Emission Technologies LLC
- Aftertreatment system for locomotive5 Feb 2026US 2026/0036071 A1Caterpillar Inc.
Most cited
By later US patents
- Vehicle exhaust filtration system and method61US 6,584,768 B1The Majestic Companies, Ltd. · 2003
- Muffler and exhaust gas purifier for internal combustion engines57US 4,032,310 A1977
- Heat isolated catalytic reactor56US 5,488,826 ADry Systems Technologies · 1996
- Regenerable diesel exhaust filter and heater53US 5,457,945 APall Corporation · 1995
- Catalytic converter exhaust section for an internal combustion engine49US 5,547,641 ACaterpillar Inc. · 1996