F02B 27/02
The systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume
Official title: the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means (in exhaust systems only F02B27/06)
F02B27/02 (The systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume) appears on 526 US grants and 274 published applications in this corpus.
Search patents in F02B- Granted patents
- 526
- Published applications
- 274
- Assignees
- 151
- Inventors
- 953
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 12 | 0 |
| 1987 | 16 | 0 |
| 1988 | 22 | 0 |
| 1989 | 21 | 0 |
| 1990 | 21 | 0 |
| 1991 | 26 | 0 |
| 1992 | 24 | 0 |
| 1993 | 11 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 14 | 0 |
| 1997 | 11 | 0 |
| 1998 | 17 | 0 |
| 1999 | 14 | 0 |
| 2000 | 10 | 0 |
| 2001 | 17 | 6 |
| 2002 | 26 | 18 |
| 2003 | 17 | 23 |
| 2004 | 22 | 18 |
| 2005 | 8 | 22 |
| 2006 | 27 | 20 |
| 2007 | 23 | 19 |
| 2008 | 12 | 26 |
| 2009 | 10 | 20 |
| 2010 | 14 | 16 |
| 2011 | 8 | 6 |
| 2012 | 12 | 6 |
| 2013 | 10 | 5 |
| 2014 | 8 | 6 |
| 2015 | 8 | 14 |
| 2016 | 8 | 7 |
| 2017 | 7 | 6 |
| 2018 | 6 | 2 |
| 2019 | 7 | 6 |
| 2020 | 5 | 13 |
| 2021 | 8 | 6 |
| 2022 | 7 | 4 |
| 2023 | 2 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Variable exhaust control system11 Nov 2025US 12,467,399 B2
- Convertible silencer15 Jul 2025US 12,359,594 B2Discovery Energy, LLC
- Air flow distribution arrangements in pre-cleaner systems11 Jun 2024US 12,006,899 B2Parker-Hannifin Corporation
- Variable valve device of vehicle air intake system14 Mar 2023US 11,603,812 B1Hyundai Motor Company
- Marine engine intake manifolds having noise attenuation14 Feb 2023US 11,578,687 B1Brunswick Corporation
- Variable air funnel apparatus1 Oct 2026US 2026/0298133 A1Honda Motor Co., Ltd.
- Intake apparatus for internal combustion engine16 Apr 2026US 2026/0104023 A1Toyota Jidosha Kabushiki Kaisha
- Convertible silencer25 Dec 2025US 2025/0389215 A1Discovery Energy, LLC
- Convertible silencer6 Feb 2025US 2025/0043706 A1Discovery Energy, LLC
- Variable Valve Device of Vehicle Air Intake System23 Feb 2023US 2023/0056467 A1Hyundai Motor Company
Most cited
By later US patents
- Intake system for internal combustion engine86US 4,763,612 AYamaha Hatsudoki Kabushiki Kaisha · 1988
- Integrated induction system61US 5,003,933 AGeneral Motors Corporation · 1991
- Integrated tuned induction system51US 4,919,086 ASiemens-Bendix Automotive Electronics L.P. · 1990
- Integrated air intake system51US 5,477,819 AFilterwerk Mann & Hummel GmbH · 1995
- Integrated tuned induction system50US 5,005,532 ASiemens-Bendix Automotive Electronics L.P. · 1991