F02B 75/18
Multi-cylinder engines
Official title: Multi-cylinder engines (scavenging aspects F02B25/00)
F02B75/18 (Multi-cylinder engines) appears on 3,639 US grants and 1,558 published applications in this corpus.
Search patents in F02B- Granted patents
- 3,639
- Published applications
- 1,558
- Assignees
- 695
- Inventors
- 4,894
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 35 | 0 |
| 1977 | 33 | 0 |
| 1978 | 52 | 0 |
| 1979 | 35 | 0 |
| 1980 | 34 | 0 |
| 1981 | 34 | 0 |
| 1982 | 29 | 0 |
| 1983 | 40 | 0 |
| 1984 | 59 | 0 |
| 1985 | 73 | 0 |
| 1986 | 51 | 0 |
| 1987 | 90 | 0 |
| 1988 | 80 | 0 |
| 1989 | 105 | 0 |
| 1990 | 101 | 0 |
| 1991 | 116 | 0 |
| 1992 | 105 | 0 |
| 1993 | 94 | 0 |
| 1994 | 75 | 0 |
| 1995 | 86 | 0 |
| 1996 | 126 | 0 |
| 1997 | 106 | 0 |
| 1998 | 137 | 0 |
| 1999 | 131 | 0 |
| 2000 | 149 | 0 |
| 2001 | 149 | 61 |
| 2002 | 169 | 176 |
| 2003 | 170 | 147 |
| 2004 | 127 | 102 |
| 2005 | 105 | 66 |
| 2006 | 72 | 32 |
| 2007 | 35 | 44 |
| 2008 | 21 | 37 |
| 2009 | 23 | 51 |
| 2010 | 30 | 26 |
| 2011 | 19 | 32 |
| 2012 | 29 | 59 |
| 2013 | 28 | 47 |
| 2014 | 58 | 49 |
| 2015 | 44 | 56 |
| 2016 | 46 | 61 |
| 2017 | 56 | 97 |
| 2018 | 73 | 66 |
| 2019 | 84 | 72 |
| 2020 | 81 | 68 |
| 2021 | 63 | 42 |
| 2022 | 50 | 45 |
| 2023 | 38 | 29 |
| 2024 | 38 | 50 |
| 2025 | 38 | 19 |
| 2026 | 17 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02B 2075/1804Number of cylindersIndexing code2,239
- F02B 75/22With cylinders in v, fan, or star arrangement1,901
- F02B 75/20With cylinders all in one line838
- F02B 75/24With cylinders arranged oppositely relative to main shaft and of "flat" type353
- F02B 75/1896With two or more pistons connected to one crank and having a22
Recent patents
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- Two stroke apposed pistons parallel cylinders internal combustion engine1 Oct 2026US 2026/0298132 A1
- Boxer Engine and Vehicle with a Boxer Engine1 Oct 2026US 2026/0298175 A1Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- Reciprocating mechanical devices and methods of operation1 Oct 2026US 2026/0298321 A1
- Power generation unit and power plant10 Sep 2026US 2026/0266214 A1WäRtsilä Finland Oy
- Motorcycle Engine27 Aug 2026US 2026/0251091 A1Zhejiang Qianjiang Motorcycle Co., Ltd.
Most cited
By later US patents
- Internal combustion engine1,364US 4,054,108 AGeneral Motors Corporation · 1977
- Opposed piston internal combustion engine with inviscid layer sealing470US 9,909,492 B2Prime Group Alliance, LLC · 2018
- Engine with cylinder deactivation168US 6,023,929 AFord Global Technologies, LLC · 2000
- Hybrid electric propulsion system164US 5,172,784 A1992
- Internal combustion engine with a single crankshaft and having opposed cylinders with opposed pistons130US 6,170,443 B22001