F01N 2470/16
Plurality of inlet tubes
Official title: Plurality of inlet tubes, e.g. discharging into different chambers
F01N2470/16 (Plurality of inlet tubes) appears on 174 US grants and 132 published applications in this corpus.
Search patents in F01N- Granted patents
- 174
- Published applications
- 132
- Assignees
- 103
- Inventors
- 398
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 7 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 1 |
| 2003 | 6 | 5 |
| 2004 | 2 | 4 |
| 2005 | 4 | 5 |
| 2006 | 1 | 6 |
| 2007 | 2 | 5 |
| 2008 | 2 | 4 |
| 2009 | 5 | 6 |
| 2010 | 2 | 6 |
| 2011 | 3 | 2 |
| 2012 | 2 | 3 |
| 2013 | 3 | 4 |
| 2014 | 8 | 5 |
| 2015 | 4 | 10 |
| 2016 | 8 | 9 |
| 2017 | 8 | 5 |
| 2018 | 1 | 4 |
| 2019 | 5 | 10 |
| 2020 | 8 | 8 |
| 2021 | 5 | 10 |
| 2022 | 12 | 10 |
| 2023 | 14 | 4 |
| 2024 | 5 | 2 |
| 2025 | 3 | 3 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Pleated filter in the exhaust manifold49US 3,937,015 ANippondenso Co., Ltd. · 1976
- Stamp formed exhaust muffler with conformal outer shell48US 4,909,348 AAP Parts Manufacturing Company · 1990
- Compositions and uses thereof44US 9,447,089 B2Hoffman-La Roche Inc. · 2016
- Exhaust sound attenuation and control system42US 6,651,773 B12003
- Easily controlled exhaust pipe39US 6,598,390 B2Liang Fei Industry Co., Ltd. · 2003