F01B 9/02
Reciprocating-piston machines or engines characterised by connections between pistons and main shafts
Official title: with crankshaft
F01B9/02 (Reciprocating-piston machines or engines characterised by connections between pistons and main shafts) appears on 372 US grants and 229 published applications in this corpus.
Search patents in F01B- Granted patents
- 372
- Published applications
- 229
- Assignees
- 146
- Inventors
- 486
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 11 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 12 | 0 |
| 1995 | 7 | 0 |
| 1996 | 12 | 0 |
| 1997 | 10 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 3 |
| 2002 | 4 | 8 |
| 2003 | 6 | 5 |
| 2004 | 6 | 10 |
| 2005 | 4 | 5 |
| 2006 | 4 | 7 |
| 2007 | 5 | 10 |
| 2008 | 5 | 4 |
| 2009 | 7 | 9 |
| 2010 | 1 | 6 |
| 2011 | 2 | 9 |
| 2012 | 6 | 12 |
| 2013 | 10 | 19 |
| 2014 | 17 | 13 |
| 2015 | 10 | 13 |
| 2016 | 8 | 11 |
| 2017 | 15 | 10 |
| 2018 | 10 | 11 |
| 2019 | 16 | 13 |
| 2020 | 11 | 18 |
| 2021 | 17 | 10 |
| 2022 | 7 | 12 |
| 2023 | 8 | 5 |
| 2024 | 5 | 1 |
| 2025 | 4 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power system with carbon dioxide working fluid, generator, and propulsion system10 Mar 2026US 12,571,310 B2
- Internal combustion engine with improved oil pump arrangement13 Jan 2026US 12,523,166 B2ASF Technologies (Australia) Pty Ltd
- Driving engine for vehicles30 Sep 2025US 12,429,011 B2Ferrari S.P. A.
- High-speed long-stroke reciprocating engine23 Sep 2025US 12,421,891 B1Saudi Arabian Oil Company
- Internal combustion engine22 Jul 2025US 12,366,200 B2ASF Technologies (Australia) Pty Ltd
- Free piston engine12 Feb 2026US 2026/0043344 A1
- Power system with carbon dioxide working fluid, generator, and propulsion system28 Aug 2025US 2025/0270931 A1
- Magnetic bearing for supporting an rc piston15 May 2025US 2025/0154984 A1Nuovo Pignone Tecnologie Srl
- Cylinder/reciprocating-piston device, compressed air engine, and vehicle1 May 2025US 2025/0137372 A1
- Driving engine for vehicles6 Mar 2025US 2025/0075671 A1Ferrari S.P. A.
Most cited
By later US patents
- Opposed piston internal combustion engine with inviscid layer sealing470US 9,909,492 B2Prime Group Alliance, LLC · 2018
- Reciprocating machine178US 5,762,480 A1998
- Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange119US 8,436,489 B2LightSail Energy, Inc. · 2013
- Scotch yoke engine with variable stroke and compression ratio64US 4,485,768 A1984
- Variable displacement piston engine55US 4,270,495 AGeneral Motors Corporation · 1981