F02B 75/00
Internal-combustion piston engines: other engines
Official title: Other engines
F02B75/00 (Internal-combustion piston engines: other engines) appears on 12,590 US grants and 5,680 published applications in this corpus.
Search patents in F02B- Granted patents
- 12,590
- Published applications
- 5,680
- Assignees
- 2,003
- Inventors
- 14,593
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 168 | 0 |
| 1977 | 165 | 0 |
| 1978 | 179 | 0 |
| 1979 | 142 | 0 |
| 1980 | 158 | 0 |
| 1981 | 156 | 0 |
| 1982 | 155 | 0 |
| 1983 | 175 | 0 |
| 1984 | 252 | 0 |
| 1985 | 250 | 0 |
| 1986 | 209 | 0 |
| 1987 | 297 | 0 |
| 1988 | 288 | 0 |
| 1989 | 349 | 0 |
| 1990 | 351 | 0 |
| 1991 | 347 | 0 |
| 1992 | 338 | 0 |
| 1993 | 355 | 0 |
| 1994 | 304 | 0 |
| 1995 | 293 | 0 |
| 1996 | 378 | 0 |
| 1997 | 321 | 0 |
| 1998 | 384 | 0 |
| 1999 | 377 | 0 |
| 2000 | 408 | 0 |
| 2001 | 463 | 169 |
| 2002 | 464 | 465 |
| 2003 | 488 | 438 |
| 2004 | 375 | 366 |
| 2005 | 306 | 236 |
| 2006 | 274 | 208 |
| 2007 | 178 | 224 |
| 2008 | 185 | 194 |
| 2009 | 116 | 235 |
| 2010 | 155 | 200 |
| 2011 | 117 | 178 |
| 2012 | 151 | 230 |
| 2013 | 153 | 214 |
| 2014 | 221 | 224 |
| 2015 | 191 | 238 |
| 2016 | 208 | 237 |
| 2017 | 221 | 302 |
| 2018 | 251 | 245 |
| 2019 | 279 | 265 |
| 2020 | 261 | 239 |
| 2021 | 216 | 161 |
| 2022 | 180 | 120 |
| 2023 | 116 | 96 |
| 2024 | 98 | 92 |
| 2025 | 84 | 53 |
| 2026 | 40 | 51 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02B 75/02Engines characterised by their cycles6,518
- F02B 75/16Engines characterised by number of cylinders4,139
- F02B 75/12Internal-combustion piston engines: other engines: other methods of operation1,733
- F02B 75/04Engines with variable distances between pistons at top dead-centre positions and cylinder1,049
- F02B 75/28Engines with two or more pistons reciprocating within same cylinder or within600
- F02B 75/32Engines characterised by connections between pistons and main shafts and not specific598
- F02B 75/06Engines with means for equalising torque318
- F02B 75/007Internal-combustion piston engines: other engines: having vertical crankshafts295
All 16 subgroupsShow fewer
- F02B 75/26Engines with cylinder axes coaxial with, or parallel or inclined to, main-shaft246
- F02B 75/34Ultra-small engines189
- F02B 75/36Engines with parts of combustion- or working-chamber walls resiliently yielding under pressure81
- F02B 75/002Double acting engines63
- F02B 75/40Internal-combustion piston engines: other engines: other reciprocating-piston engines45
- F02B 75/005Internal-combustion piston engines: other engines: having horizontal cylinders30
- F02B 75/10Engines with means for rendering exhaust gases innocuous23
- F02B 75/08Engines with means for preventing corrosion in gas-swept spaces7
Recent patents
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- Cylinder block and internal combustion engine system22 Sep 2026US 12,742,432 B2Cummins Inc.
- Motorcycle engine15 Sep 2026US 12,736,006 B2Zheijing Qianjiang Motorcycle Co., Ltd.
- Piston system for a compression engine8 Sep 2026US 12,729,642 B2
- Mobile mechanical leverage to generate torque force to a rotary shaft18 Aug 2026US 12,710,075 B2
- Two-cycle engine with scavaging passage8 Oct 2026US 2026/0309071 A1Maruyama Mfg.Co., Inc.
- Engine control system and methods8 Oct 2026US 2026/0309111 A1Arctic Cat Inc.
- 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
Most cited
By later US patents
- Internal combustion engine1,364US 4,054,108 AGeneral Motors Corporation · 1977
- Methods for identifying nucleic acid ligands856US 5,270,163 AUniversity Research Corporation · 1993
- Flow meter567US 6,874,480 B1Combustion Dynamics Corp. · 2005
- Nucleic acid ligands561US 5,475,096 AUniversity Research Corporation · 1995
- Opposed piston internal combustion engine with inviscid layer sealing470US 9,909,492 B2Prime Group Alliance, LLC · 2018