F04B 27/0808
Having two or more sets of cylinders or pistons
Official title: {having two or more sets of cylinders or pistons}
F04B27/0808 (Having two or more sets of cylinders or pistons) appears on 10 US grants and 9 published applications in this corpus.
Search patents in F04B- Granted patents
- 10
- Published applications
- 9
- Assignees
- 9
- Inventors
- 24
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Straight axis variable displacement piston pump with rotating swash plate14 Apr 2026US 12,601,333 B2Hamilton Sundstrand Corporation
- Piston compressor25 May 2021US 11,015,587 B2Kabushiki Kaisha Toyota Jidoshokki
- Hydraulic axial piston machine20 Mar 2018US 9,920,751 B2Robert Bosch GmbH
- Piston-type compressor27 Oct 2015US 9,169,835 B2Valeo Japan Co., Ltd.
- Micro compressor20 May 2014US 8,727,742 B2Korea Institute of Science and Technology
- Straight axis variable displacement piston pump with rotating swash plate25 Dec 2025US 2025/0389259 A1Hamilton Sundstrand Corporation
- Piston compressor3 Oct 2019US 2019/0301440 A1Kabushiki Kaisha Toyota Jidoshokki
- Hydraulic Axial Piston Machine15 Aug 2013US 2013/0205987 A1Robert Bosch GmbH
- Piston-Type Compressor21 Feb 2013US 2013/0042750 A1Valeo Japan Co., Ltd.
- Micro compressor26 Jan 2012US 2012/0020813 A1Korea Institute of Science and Technology
Most cited
By later US patents
- Multiple axis rotary compressor48US 5,304,043 AAvMed Compressor Corporation · 1994
- Axial piston gas compressor6US 5,415,530 AAvMed Compressor Corporation · 1995
- Rotary hydraulic machine2US 6,918,336 B1Honda Giken Kogyo Kabushiki Kaisha · 2005
- Rotary hydraulic machine2US 6,959,638 B2Honda Giken Kogyo Kabushiki Kaisha · 2005
- Micro compressor1US 8,727,742 B2Korea Institute of Science and Technology · 2014