F02B 77/04
Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in
Official title: Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
F02B77/04 (Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in) appears on 433 US grants and 250 published applications in this corpus.
Search patents in F02B- Granted patents
- 433
- Published applications
- 250
- Assignees
- 209
- Inventors
- 817
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 8 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 15 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 17 | 0 |
| 1995 | 21 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 15 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 11 | 1 |
| 2002 | 3 | 6 |
| 2003 | 18 | 17 |
| 2004 | 9 | 10 |
| 2005 | 9 | 5 |
| 2006 | 9 | 6 |
| 2007 | 4 | 6 |
| 2008 | 3 | 5 |
| 2009 | 0 | 2 |
| 2010 | 2 | 6 |
| 2011 | 3 | 3 |
| 2012 | 2 | 8 |
| 2013 | 4 | 7 |
| 2014 | 9 | 8 |
| 2015 | 7 | 14 |
| 2016 | 2 | 12 |
| 2017 | 10 | 23 |
| 2018 | 14 | 26 |
| 2019 | 18 | 21 |
| 2020 | 22 | 25 |
| 2021 | 20 | 7 |
| 2022 | 10 | 12 |
| 2023 | 13 | 4 |
| 2024 | 5 | 8 |
| 2025 | 1 | 3 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tooling assembly for cleaning a cylinder head using pressurized fluid and a method for the same25 Nov 2025US 12,479,013 B2Fives Cinetic Corp.
- Internal combustion engine with coated ignition system component(s)22 Oct 2024US 12,123,343 B1Pratt & Whitney Canada Corp.
- Cleaning engine intake valves and surrounding intake areas15 Oct 2024US 12,115,567 B2BG Intellectuals, Inc.
- Throttle body with reduced deposit accumulation and enhanced thermal conductivity2 Apr 2024US 11,946,432 B2GM Global Technology Operations LLC
- Anti-polish ring for an engine cylinder5 Mar 2024US 11,920,538 B2Cummins Inc.
- Gas turbine engine cleaning system18 Jun 2026US 2026/0168393 A1General Electric Company
- Gas turbine engine treatment system18 Jun 2026US 2026/0168402 A1General Electric Company
- Arrangement for an internal combustion engine18 Jun 2026US 2026/0168576 A1
- Chemical Atomizer for Chemical Induction Delivery26 Feb 2026US 2026/0055724 A1ATS Chemical, LLC
- Tooling assembly for cleaning a cylinder head using pressurized fluid and a method for the same19 Feb 2026US 2026/0048423 A1Fives Cinetic Corp.
Most cited
By later US patents
- Fuel compositions of poly(oxyalkylene) aminocarbamate108US 4,191,537 AChevron Research Company · 1980
- Cleaning and preservation unit for turbine engine101US 4,059,123 AAvco Corporation · 1977
- Method of cleaning internal combustion engine cooling system and filter for use therein98US 5,050,549 A1991
- Automatic fuel system cleaner90US 6,715,502 B1Motorvac Technologies, Inc. · 2004
- Coated articles and method for the prevention of fuel thermal degradation deposits80US 5,805,973 AGeneral Electric Company · 1998