F02B 33/44
Passages conducting the charge from the pump to the engine inlet
Official title: Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
F02B33/44 (Passages conducting the charge from the pump to the engine inlet) appears on 656 US grants and 445 published applications in this corpus.
Search patents in F02B- Granted patents
- 656
- Published applications
- 445
- Assignees
- 225
- Inventors
- 1,174
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 11 | 0 |
| 1984 | 15 | 0 |
| 1985 | 16 | 0 |
| 1986 | 10 | 0 |
| 1987 | 9 | 0 |
| 1988 | 11 | 0 |
| 1989 | 14 | 0 |
| 1990 | 13 | 0 |
| 1991 | 18 | 0 |
| 1992 | 15 | 0 |
| 1993 | 15 | 0 |
| 1994 | 14 | 0 |
| 1995 | 14 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 13 | 0 |
| 1999 | 11 | 0 |
| 2000 | 11 | 0 |
| 2001 | 25 | 10 |
| 2002 | 17 | 14 |
| 2003 | 19 | 23 |
| 2004 | 19 | 27 |
| 2005 | 20 | 17 |
| 2006 | 19 | 15 |
| 2007 | 6 | 19 |
| 2008 | 6 | 24 |
| 2009 | 9 | 24 |
| 2010 | 18 | 21 |
| 2011 | 16 | 33 |
| 2012 | 8 | 21 |
| 2013 | 28 | 23 |
| 2014 | 18 | 20 |
| 2015 | 14 | 30 |
| 2016 | 20 | 20 |
| 2017 | 22 | 18 |
| 2018 | 23 | 24 |
| 2019 | 21 | 15 |
| 2020 | 20 | 14 |
| 2021 | 12 | 9 |
| 2022 | 12 | 8 |
| 2023 | 11 | 9 |
| 2024 | 10 | 5 |
| 2025 | 3 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Split cycle engine2 Jun 2026US 12,644,406 B2Fpt Industrial S.P.A.
- Optimal efficiency internal combustion engine7 Apr 2026US 12,595,758 B2Creed Engines, LLC
- Opposed-piston internal combustion engine25 Nov 2025US 12,480,439 B2Umu Devising LLC
- Systems and methods for coordinating an air blend valve with an intake air heater14 Oct 2025US 12,442,352 B1Saudi Arabian Oil Company
- Clutch-type air compressor system and control method and control apparatus thereof15 Jul 2025US 12,359,634 B2Zf Commercial Vehicle Systems (Qingdao) Co., Ltd.
- Opposed-piston internal combustion engine2 Oct 2025US 2025/0305446 A1Umu Devising LLC
- Clutch-type air compressor system and control method and control apparatus thereof8 May 2025US 2025/0146448 A1Zf Commercial Vehicle Systems (Qingdao) Co., Ltd.
- Method for operating a supercharged internal combustion engine and device for providing combustion air for a supercharged internal combustion engine17 Oct 2024US 2024/0344477 A1Liebherr Machines Bulle SA
- Split Cycle Engine17 Oct 2024US 2024/0344478 A1Dolphin N2 Limited
- Condensation management for internal combustion engines23 May 2024US 2024/0167439 A1Cummins Inc.
Most cited
By later US patents
- Turbocharging systems for internal combustion engines208US 5,771,868 ATurbodyne Systems, Inc. · 1998
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Engine with combustion and expansion of the combustion gases within the combustor155US 6,817,185 B2innogy SE · 2004
- Method and a device for regulation of a turbo-charging device135US 5,408,979 AAB Volvo · 1995
- Multiple stage supercharging system131US 5,586,540 A1996