F02B 37/225
Air passages
Official title: {air passages}
F02B37/225 (Air passages) appears on 130 US grants and 145 published applications in this corpus.
Search patents in F02B- Granted patents
- 130
- Published applications
- 145
- Assignees
- 72
- Inventors
- 338
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 4 | 3 |
| 2004 | 2 | 5 |
| 2005 | 3 | 1 |
| 2006 | 2 | 9 |
| 2007 | 0 | 3 |
| 2008 | 6 | 3 |
| 2009 | 2 | 3 |
| 2010 | 1 | 4 |
| 2011 | 2 | 3 |
| 2012 | 3 | 1 |
| 2013 | 3 | 2 |
| 2014 | 3 | 4 |
| 2015 | 4 | 9 |
| 2016 | 5 | 6 |
| 2017 | 5 | 15 |
| 2018 | 7 | 9 |
| 2019 | 12 | 23 |
| 2020 | 19 | 19 |
| 2021 | 16 | 9 |
| 2022 | 8 | 2 |
| 2023 | 4 | 4 |
| 2024 | 3 | 3 |
| 2025 | 3 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for starting a power system14 Jul 2026US 12,680,522 B2Volvo Truck Corporation
- Venturi device with forced induction10 Mar 2026US 12,571,341 B2Zero Nox, Inc.
- System and method for an electronic pressure controlled supercharger27 May 2025US 12,313,014 B1The Tuning School, Inc
- Exhaust gas purification device and engine25 Feb 2025US 12,234,761 B2Yanmar Holdings Co., Ltd.
- Engine braking in hydrogen internal combustion engines28 Jan 2025US 12,209,544 B1Eaton Intelligent Power Limited
- Centrifugal compressor and turbocharger13 Aug 2026US 2026/0235140 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Variable geometry turbine6 Aug 2026US 2026/0226846 A1Cummins Inc.
- Method for starting a power system4 Sep 2025US 2025/0277477 A1Volvo Truck Corporation
- Exhaust gas purification device and engine19 Sep 2024US 2024/0309786 A1Yanmar Holdings Co., Ltd.
- Venturi device with forced induction13 Jun 2024US 2024/0191650 A1Zero Nox, Inc.
Most cited
By later US patents
- Control system for exhaust gas recovery system in an internal combustion engine151US 5,771,867 ACaterpillar Inc. · 1998
- High pressure ratio turbocharger73US 5,025,629 A1991
- Control system for exhaust gas recirculation system44US 6,209,530 B1Caterpillar Inc. · 2001
- Turbocharger control system37US 4,981,017 AIsuzu Motors Limited · 1991
- Turbine assemblies and related systems for use with turbochargers37US 7,428,814 B22008