F01B 13/04
Reciprocating-piston machines or engines with rotating cylinders in order to obtain the
Official title: with more than one cylinder
F01B13/04 (Reciprocating-piston machines or engines with rotating cylinders in order to obtain the) appears on 268 US grants and 91 published applications in this corpus.
Search patents in F01B- Granted patents
- 268
- Published applications
- 91
- Assignees
- 82
- Inventors
- 277
- Latest grant
- 20 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 17 | 0 |
| 1978 | 12 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 9 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 2 |
| 2003 | 9 | 10 |
| 2004 | 8 | 11 |
| 2005 | 11 | 10 |
| 2006 | 6 | 2 |
| 2007 | 0 | 3 |
| 2008 | 3 | 4 |
| 2009 | 2 | 3 |
| 2010 | 2 | 4 |
| 2011 | 0 | 1 |
| 2012 | 5 | 4 |
| 2013 | 0 | 5 |
| 2014 | 1 | 5 |
| 2015 | 5 | 7 |
| 2016 | 5 | 2 |
| 2017 | 6 | 3 |
| 2018 | 5 | 4 |
| 2019 | 2 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 3 | 2 |
| 2023 | 3 | 2 |
| 2024 | 2 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Bearing device for radial piston machine20 Aug 2024US 12,065,933 B2Daido Metal Company Ltd.
- Bearing device for radial piston machine25 Jun 2024US 12,018,566 B2Daido Metal Company Ltd.
- Hydrostatic machine comprising a cam ring with adjacent bearings of same outer diameter, and manufacturing method12 Dec 2023US 11,841,009 B2
- Rotary engine14 Nov 2023US 11,814,960 B2
- Rotary engine11 Jul 2023US 11,697,993 B1
- Radial Piston Machine with Multi-Disc Brake27 Mar 2025US 2025/0102031 A1Robert Bosch GmbH
- Energy harvesting heat engine19 Dec 2024US 2024/0418136 A1Synergy Power LLC
- Hydrostatic machine comprising a cam ring with adjacent bearings of same outer diameter, and manufacturing method14 Dec 2023US 2023/0400015 A1
- Rotary engine13 Apr 2023US 2023/0111792 A1
- Bearing device for radial piston machine31 Mar 2022US 2022/0098981 A1Daido Metal Company Ltd.
Most cited
By later US patents
- Pipeline built-in electric power generating set139US 4,740,711 AFuji Electric Co., Ltd. · 1988
- Pump94US 6,332,393 B1Hydro-Gear Limited Partnership · 2001
- Zero-turn transaxle with mounted return to neutral mechanism72US 6,487,857 B1Hydro-Gear Limited Partnership · 2002
- Fixed swash plate for an axial piston machine54US 5,074,195 AKanzaki Kokyukoki Mfg.Co., Ltd. · 1991
- Constant volume, continuous external combustion rotary engine with piston compressor and expander49US 4,336,686 ACombustion Research & Technology, Inc. · 1982