F01N 2470/12
Tubes being corrugated
F01N2470/12 (Tubes being corrugated) appears on 93 US grants and 66 published applications in this corpus.
Search patents in F01N- Granted patents
- 93
- Published applications
- 66
- Assignees
- 70
- Inventors
- 178
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 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 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 3 |
| 2004 | 1 | 4 |
| 2005 | 4 | 2 |
| 2006 | 1 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 1 | 4 |
| 2011 | 2 | 1 |
| 2012 | 1 | 4 |
| 2013 | 2 | 2 |
| 2014 | 0 | 4 |
| 2015 | 5 | 2 |
| 2016 | 6 | 6 |
| 2017 | 1 | 2 |
| 2018 | 3 | 8 |
| 2019 | 3 | 5 |
| 2020 | 7 | 4 |
| 2021 | 7 | 1 |
| 2022 | 3 | 1 |
| 2023 | 2 | 1 |
| 2024 | 0 | 2 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Dosing and mixing assemblies for exhaust aftertreatment system18 Nov 2025US 12,473,851 B2Donaldson Company, Inc.
- Hyperboloid (concave) bellows29 Apr 2025US 12,287,047 B2Hyspan Precision Products, Inc.
- Dosing and mixing assemblies for exhaust aftertreatment system3 Oct 2023US 11,773,763 B2Donaldson Company, Inc.
- Heat exchanger8 Aug 2023US 11,719,489 B2NGK Insulators, Ltd.
- Exhaust device for internal combustion engine of saddled vehicle9 Aug 2022US 11,408,313 B2Honda Motor Co., Ltd.
- Sound-absorbing silencer having diffuse reflection structure6 Jun 2024US 2024/0183294 A1
- Dosing and mixing assemblies for exhaust aftertreatment system18 Jan 2024US 2024/0018890 A1Donaldson Company, Inc.
- Hyperboloid (concave) bellows27 Apr 2023US 2023/0129472 A1Hyspan Precision Products, Inc.
- Dosing and mixing assemblies for exhaust aftertreatment system27 Oct 2022US 2022/0341357 A1Donaldson Company, Inc.
- Thin walled welded connection17 Jun 2021US 2021/0180503 A1Flexible Metal, Inc.
Most cited
By later US patents
- Low pressure EGR system for diesel engines149US 6,301,887 B1Engelhard Corporation · 2001
- Method and apparatus for thermal management of vehicle exhaust systems92US 5,477,676 AMidwest Research Institute · 1995
- Gas-controlled dynamic vacuum insulation with gas gate78US 5,318,108 AMidwest Research Institute · 1994
- Exhaust gas cleaning apparatus71US 5,346,675 AUsui Kokusai Sangyo Kabushiki Kaisha · 1994
- Material-controlled dynamic vacuum insulation68US 5,562,154 A1996