F01N 2470/20
Dimensional characteristics of tubes
Official title: Dimensional characteristics of tubes, e.g. length, diameter
F01N2470/20 (Dimensional characteristics of tubes) appears on 196 US grants and 219 published applications in this corpus.
Search patents in F01N- Granted patents
- 196
- Published applications
- 219
- Assignees
- 121
- Inventors
- 476
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 3 |
| 2005 | 3 | 10 |
| 2006 | 2 | 3 |
| 2007 | 2 | 7 |
| 2008 | 2 | 6 |
| 2009 | 3 | 7 |
| 2010 | 5 | 13 |
| 2011 | 4 | 4 |
| 2012 | 13 | 8 |
| 2013 | 10 | 8 |
| 2014 | 6 | 14 |
| 2015 | 12 | 13 |
| 2016 | 14 | 12 |
| 2017 | 8 | 10 |
| 2018 | 6 | 11 |
| 2019 | 14 | 11 |
| 2020 | 9 | 5 |
| 2021 | 8 | 22 |
| 2022 | 9 | 17 |
| 2023 | 19 | 10 |
| 2024 | 11 | 9 |
| 2025 | 9 | 9 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Muffler for internal combustion engines25 Aug 2026US 12,716,373 B2Plaggio & C. S.P.A.
- Exhaust component14 Jul 2026US 12,680,492 B2Futaba Industrial Co., Ltd.
- Exhaust purification apparatus5 May 2026US 12,618,352 B2Toyota Jidosha Kabushiki Kaisha
- Tunable exhaust system16 Dec 2025US 12,497,913 B2Advanced Flow Engineering, Inc.
- Exhaust structure for exhaust manifold18 Nov 2025US 12,473,854 B2Caterpillar Inc.
- Exhaust gas aftertreatment13 Aug 2026US 2026/0233162 A1Proventia Oy
- Tunable Exhaust System2 Apr 2026US 2026/0092544 A1Advanced Flow Engineering, Inc.
- Two-stroke exhaust manifold and associated systems and methods19 Feb 2026US 2026/0049566 A1Starting Line Products, Inc.
- Exhaust purification apparatus13 Nov 2025US 2025/0347243 A1Toyota Jidosha Kabushiki Kaisha
- Mixer for exhaust aftertreatment system24 Jul 2025US 2025/0237160 A1Cummins Emission Solutions Inc.
Most cited
By later US patents
- Vehicle exhaust system118US 7,766,123 B2Yamaha Hatsudoki Kabushiki Kaisha · 2010
- Noise silencer97US 4,109,751 ADeere & Company · 1978
- Muffler with catalytic converter arrangement; and method53US 5,355,973 ADonaldson Company, Inc. · 1994
- Modular muffler for motor vehicles36US 5,371,331 A1994
- Hot-gas-filtering fabric of spaced uncrimped support strands and crimped lofty fill yarns34US 5,180,409 AMinnesota Mining and Manufacturing Company · 1993