F01B 1/00
Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders
Official title: Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements (F01B3/00, F01B5/00 take precedence)
F01B1/00 (Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders) appears on 492 US grants and 294 published applications in this corpus.
Search patents in F01B- Granted patents
- 492
- Published applications
- 294
- Assignees
- 205
- Inventors
- 615
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 23 | 0 |
| 1978 | 20 | 0 |
| 1979 | 9 | 0 |
| 1980 | 12 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 12 | 0 |
| 1987 | 12 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 11 | 0 |
| 1993 | 7 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 2 | 9 |
| 2002 | 6 | 7 |
| 2003 | 13 | 4 |
| 2004 | 4 | 11 |
| 2005 | 10 | 10 |
| 2006 | 4 | 6 |
| 2007 | 8 | 5 |
| 2008 | 3 | 7 |
| 2009 | 4 | 7 |
| 2010 | 1 | 10 |
| 2011 | 4 | 3 |
| 2012 | 8 | 19 |
| 2013 | 8 | 18 |
| 2014 | 14 | 27 |
| 2015 | 17 | 19 |
| 2016 | 10 | 19 |
| 2017 | 16 | 17 |
| 2018 | 24 | 17 |
| 2019 | 21 | 17 |
| 2020 | 20 | 15 |
| 2021 | 15 | 13 |
| 2022 | 13 | 15 |
| 2023 | 11 | 6 |
| 2024 | 7 | 6 |
| 2025 | 10 | 5 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01B 1/06Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders222
- F01B 1/12Separate cylinder-crankcase elements coupled together to form a unit99
- F01B 1/08Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders80
- F01B 1/10Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders44
- F01B 1/01Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders24
- F01B 1/04Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders18
- F01B 1/02Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders16
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Most cited
By later US patents
- Opposed piston internal combustion engine with inviscid layer sealing470US 9,909,492 B2Prime Group Alliance, LLC · 2018
- HCCI engine intake/exhaust systems for fast inlet temperature and pressure control with intake pressure boosting117US 6,675,579 B1Ford Global Technologies, LLC · 2004
- Method for the determination of glycated hemoglobin117US 7,005,273 B2TheraSense, Inc. · 2006
- Gas compressor construction and assembly109US 5,326,231 ABristol Compressors, Inc. · 1994
- Modular energy system104US 4,992,669 A1991