F02B 19/18
Transfer passages between chamber and cylinder
F02B19/18 (Transfer passages between chamber and cylinder) appears on 192 US grants and 204 published applications in this corpus.
Search patents in F02B- Granted patents
- 192
- Published applications
- 204
- Assignees
- 90
- Inventors
- 365
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 1 | 2 |
| 2005 | 3 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 3 | 1 |
| 2009 | 2 | 4 |
| 2010 | 1 | 2 |
| 2011 | 1 | 7 |
| 2012 | 1 | 3 |
| 2013 | 2 | 7 |
| 2014 | 7 | 7 |
| 2015 | 8 | 7 |
| 2016 | 3 | 18 |
| 2017 | 15 | 13 |
| 2018 | 10 | 10 |
| 2019 | 10 | 11 |
| 2020 | 5 | 16 |
| 2021 | 22 | 17 |
| 2022 | 20 | 20 |
| 2023 | 25 | 29 |
| 2024 | 20 | 12 |
| 2025 | 6 | 6 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pre-chamber combustion systems and methods11 Aug 2026US 12,704,088 B2M2X Energy Inc.
- Housing component for a prechamber component of a combustion engine9 Jun 2026US 12,650,090 B2Innio Jenbacher GmbH & Co OG
- Systems, devices and methods for input and output pressure management of air breathing engine reformers10 Mar 2026US 12,570,526 B2M2X Energy Inc.
- Spray guided stratification for fueling a passive pre-chamber3 Mar 2026US 12,565,849 B2Saudi Arabian Oil Company
- Method of producing engine6 Jan 2026US 12,516,621 B2Subaru Corporation
- Two-stroke internal combustion engine having a combustion chamber with a pre-chamber27 Aug 2026US 2026/0251088 A1Brp-Rotax GmbH & Co. KG
- Cylinder head assembly for an internal combustion engine18 Jun 2026US 2026/0168432 A1
- Systems, apparatus, and methods for inducing enhanced radical ignition in internal combustion engines using a radical chemicals generator7 May 2026US 2026/0126001 A1Radical Combustion Technologies, LLC
- Prechamber element, igniting device and method for assembling an igniting device2 Apr 2026US 2026/0092552 A1DKT Verwaltungs-GmbH
- Engine26 Mar 2026US 2026/0085629 A1Yanmar Holdings Co., Ltd.
Most cited
By later US patents
- Fuel combustion system, method, and nozzle member therefor65US 5,024,193 ACaterpillar Inc. · 1991
- Fuel combustion assembly for an internal combustion engine having an encapsulated spark plug for igniting lean gaseous fuel within a precombustion chamber57US 5,947,076 ACaterpillar Inc. · 1999
- Use of prechambers with dual fuel source engines57US 8,925,518 B1Woodward, Inc. · 2015
- Swirl chamber used in association with a combustion chamber for diesel engines47US 6,899,076 B2Kubota Corporation · 2005
- Multi-chamber igniter45US 8,839,762 B1Woodward, Inc. · 2014