F01B 1/06
Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders
Official title: with cylinders in star or fan arrangement
F01B1/06 (Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders) appears on 222 US grants and 94 published applications in this corpus.
Search patents in F01B- Granted patents
- 222
- Published applications
- 94
- Assignees
- 90
- Inventors
- 259
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 19 | 0 |
| 1978 | 13 | 0 |
| 1979 | 4 | 0 |
| 1980 | 9 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 3 | 0 |
| 2004 | 1 | 4 |
| 2005 | 3 | 1 |
| 2006 | 0 | 1 |
| 2007 | 2 | 3 |
| 2008 | 1 | 3 |
| 2009 | 0 | 2 |
| 2010 | 0 | 4 |
| 2011 | 3 | 1 |
| 2012 | 2 | 9 |
| 2013 | 1 | 4 |
| 2014 | 3 | 8 |
| 2015 | 6 | 6 |
| 2016 | 3 | 10 |
| 2017 | 5 | 3 |
| 2018 | 7 | 5 |
| 2019 | 8 | 4 |
| 2020 | 6 | 6 |
| 2021 | 5 | 4 |
| 2022 | 5 | 6 |
| 2023 | 7 | 4 |
| 2024 | 3 | 1 |
| 2025 | 3 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotary steam engine30 Jun 2026US 12,669,056 B2
- Radial cam engine23 Jun 2026US 12,662,941 B2
- Hydraulic control circuit for a hydraulic motor2 Dec 2025US 12,486,770 B2Danfoss Power Solutions GmbH & Co. OHG
- Pneumatic motor9 Sep 2025US 12,410,710 B2Circle Dynamics Inc.
- Epicyclic rotary engine14 Jan 2025US 12,196,127 B1
- Rotary steam engine26 Feb 2026US 2026/0055707 A1
- Free piston engine12 Feb 2026US 2026/0043344 A1
- Piston assembly for hydraulic pump13 Nov 2025US 2025/0347276 A1Goodrich Actuation Systems Limited
- A radial cam engine16 Oct 2025US 2025/0320819 A1
- Hydraulic control circuit for a hydraulic motor20 Jun 2024US 2024/0200454 A1Danfoss Power Solutions GmbH & Co. OHG
Most cited
By later US patents