F02M 26/70
Flap valves
Official title: Flap valves; Rotary valves; Sliding valves; Resilient valves
F02M26/70 (Flap valves) appears on 325 US grants and 371 published applications in this corpus.
Search patents in F02M- Granted patents
- 325
- Published applications
- 371
- Assignees
- 141
- Inventors
- 664
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 2 |
| 2002 | 7 | 5 |
| 2003 | 9 | 11 |
| 2004 | 3 | 2 |
| 2005 | 10 | 15 |
| 2006 | 12 | 9 |
| 2007 | 13 | 17 |
| 2008 | 2 | 11 |
| 2009 | 6 | 10 |
| 2010 | 7 | 17 |
| 2011 | 8 | 15 |
| 2012 | 6 | 13 |
| 2013 | 12 | 26 |
| 2014 | 5 | 13 |
| 2015 | 17 | 32 |
| 2016 | 13 | 22 |
| 2017 | 23 | 22 |
| 2018 | 17 | 21 |
| 2019 | 19 | 24 |
| 2020 | 25 | 23 |
| 2021 | 18 | 19 |
| 2022 | 16 | 15 |
| 2023 | 15 | 13 |
| 2024 | 8 | 7 |
| 2025 | 10 | 3 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve assembly and method16 Sep 2025US 12,416,361 B2G. W. Lisk Company, Inc.
- Exhaust gas recirculation valve assembly19 Aug 2025US 12,392,309 B2Power Packer North America, Inc.
- Evaluation system and method22 Jul 2025US 12,366,306 B2Transportation IP Holdings, LLC
- EGR valve15 Jul 2025US 12,359,748 B2Aisan Kogyo Kabushiki Kaisha
- Compact EGR valve8 Jul 2025US 12,352,226 B2Stanadyne Operating Company LLC
- Egr valve for an internal combustion engine27 Aug 2026US 2026/0251109 A1Volvo Truck Corporation
- Exhaust gas recirculation circuit for improved particle filter regeneration20 Aug 2026US 2026/0243219 A1Volvo Truck Corporation
- Trap adapter for exhaust gas recirculation valve and exhaust gas recirculation valve including the same26 Mar 2026US 2026/0085648 A1Korens Global Co., Ltd.
- Shell type needle roller bearing19 Mar 2026US 2026/0078802 A1Ntn Corporation
- Reed valve13 Nov 2025US 2025/0347346 A1Moto Tassinari, Inc.
Most cited
By later US patents
- Turbocharger and EGR system78US 6,263,672 B1BorgWarner Inc. · 2001
- Exhaust gas recirculation system for a compression ignition engine and a method of controlling exhaust gas recirculation in a compression ignition engine75US 5,520,161 AAlternative Fuel Sytems Inc. · 1996
- Exhaust gas recirculation system for a diesel engine62US 4,020,809 ACaterpillar Tractor Co. · 1977
- Variable flow venturi assembly for use in an exhaust gas recirculation system of an internal combustion engine51US 6,343,594 B12002
- Fast response exhaust gas recirculation (EGR) system49US 4,924,840 AFord Motor Company · 1990