F02M 21/0266
Hollow stem valves
Official title: {Hollow stem valves; Piston valves; Stems having a spherical tip}
F02M21/0266 (Hollow stem valves) appears on 66 US grants and 66 published applications in this corpus.
Search patents in F02M- Granted patents
- 66
- Published applications
- 66
- Assignees
- 49
- Inventors
- 144
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 3 |
| 2003 | 4 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 5 |
| 2008 | 1 | 1 |
| 2009 | 2 | 2 |
| 2010 | 2 | 1 |
| 2011 | 3 | 3 |
| 2012 | 0 | 5 |
| 2013 | 4 | 6 |
| 2014 | 4 | 5 |
| 2015 | 2 | 1 |
| 2016 | 5 | 3 |
| 2017 | 3 | 2 |
| 2018 | 3 | 2 |
| 2019 | 1 | 3 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 4 |
| 2025 | 4 | 5 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel injection system for hydrogen gas11 Nov 2025US 12,467,423 B2Phinia Delphi Luxembourg Sarl
- Fuel injector4 Nov 2025US 12,460,605 B2Phinia Delphi Luxembourg Sarl
- Fuel injector for gaseous fuel and valve assembly for the same12 Aug 2025US 12,385,452 B2Cummins Inc.
- Injector sleeve for an injector, and blowing device and internal combustion engine18 Mar 2025US 12,253,052 B2Daimler Truck AG
- Injector for a combustion engine, in particular of a motor vehicle, and combustion engine for a motor vehicle28 Nov 2023US 11,828,251 B2Daimler Truck AG
- Internal combustion engine and fueling system for injecting gaseous fuel and method for releasing movable mass from valve seat25 Jun 2026US 2026/0177020 A1
- Gaseous fuel injection valve4 Jun 2026US 2026/0153066 A1Denso Corporation
- Gas fuel injector22 Jan 2026US 2026/0022683 A1Nikki Co., Ltd.
- Fuel injector28 Aug 2025US 2025/0270972 A1Phinia Delphi Luxembourg Sarl
- Fuel injection system for hydrogen gas8 May 2025US 2025/0146455 A1Phinia Delphi Luxembourg Sarl
Most cited
By later US patents
- Electrically actuated gaseous fuel timing and metering device64US 5,035,360 AThe University of Toronto Innovations Foundation · 1991
- Compressed natural gas injector with gaseous damping for armature needle assembly during opening47US 6,089,467 ASiemens Automotive Corporation · 2000
- Air/fuel induction system for a multi-cylinder internal combustion engine40US 4,617,904 ASolex (U.K.) Limited · 1986
- Gaseous fuel injector with thermally stable solenoid coil37US 6,173,915 B1Siemens Automotive Corporation · 2001
- High speed electrically actuated gaseous fuel admission valve35US 5,398,724 AWoodward Governor Company · 1995