F02D 19/0668
Treating or cleaning means
Official title: {Treating or cleaning means; Fuel filters}
F02D19/0668 (Treating or cleaning means) appears on 412 US grants and 468 published applications in this corpus.
Search patents in F02D- Granted patents
- 412
- Published applications
- 468
- Assignees
- 150
- Inventors
- 659
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 6 |
| 2003 | 6 | 9 |
| 2004 | 11 | 7 |
| 2005 | 3 | 5 |
| 2006 | 6 | 14 |
| 2007 | 12 | 22 |
| 2008 | 14 | 23 |
| 2009 | 11 | 20 |
| 2010 | 17 | 29 |
| 2011 | 15 | 34 |
| 2012 | 19 | 27 |
| 2013 | 28 | 23 |
| 2014 | 19 | 19 |
| 2015 | 18 | 24 |
| 2016 | 15 | 7 |
| 2017 | 17 | 21 |
| 2018 | 15 | 24 |
| 2019 | 17 | 41 |
| 2020 | 32 | 22 |
| 2021 | 34 | 15 |
| 2022 | 11 | 16 |
| 2023 | 18 | 14 |
| 2024 | 18 | 21 |
| 2025 | 17 | 17 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Internal combustion engine12 May 2026US 12,624,669 B2Innio Jenbacher GmbH & Co OG
- Method of operating an internal combustion engine of a truck or omnibus28 Apr 2026US 12,612,878 B2Obrist Technologies GmbH
- Fuel supply system for supplying a fuel emulsion to a fuel injection system of an engine14 Apr 2026US 12,601,305 B2Caterpillar Motoren GmbH & Co. KG
- Fuel reforming system for vehicle with engine mounted thereon14 Apr 2026US 12,601,318 B2Mazda Motor Corporation
- Ammonia cracking for multi-fuel engines17 Feb 2026US 12,552,419 B2Cummins Power Generation Inc.
- Improvements relating to internal combustion engines3 Sep 2026US 2026/0258758 A1Commonwealth Scientific and Industrial Research Organisation
- Method and Apparatus for Non-Fossil Fuel Internal Combustion Engine27 Aug 2026US 2026/0251112 A1MayMaan Research, LLC
- Ammonia gas supply system and internal combustion engine system13 Aug 2026US 2026/0235093 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- System and method of adding gaseous oxygen additive derived from an oxygen concentrator to diesel fuel to improve combustion11 Jun 2026US 2026/0160223 A1H2Diesel, Inc.
- Ammonia cracking for multi-fuel engines4 Jun 2026US 2026/0152212 A1Cummins Power Generation Inc.
Most cited
By later US patents
- Remedial system: a pollution control device for utilizing and abating volatile organic compounds178US 8,776,734 B1Innovative Environmental Solutions, LLC · 2014
- Reformed natural gas for powering an internal combustion engine177US 6,508,209 B12003
- Optimized fuel management system for direct injection ethanol enhancement of gasoline engines129US 7,225,787 B2Massachusetts Institute of Technology · 2007
- Fuel supply apparatus for an internal combustion engine128US 6,711,893 B2ExxonMobil Research and Engineering Company · 2004
- Waste oil management system102US 5,336,396 A1994