F04C 9/002
The piston oscillating around a fixed axis
Official title: {the piston oscillating around a fixed axis}
F04C9/002 (The piston oscillating around a fixed axis) appears on 36 US grants and 27 published applications in this corpus.
Search patents in F04C- Granted patents
- 36
- Published applications
- 27
- Assignees
- 25
- Inventors
- 49
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 3 |
| 2015 | 3 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 2 |
| 2018 | 2 | 3 |
| 2019 | 2 | 2 |
| 2020 | 1 | 3 |
| 2021 | 3 | 3 |
| 2022 | 3 | 2 |
| 2023 | 1 | 0 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Moving wall multiphase compressor-pump-expander system21 Apr 2026US 12,607,188 B1
- Radial piston machine with brake17 Dec 2024US 12,169,006 B2Robert Bosch GmbH
- Vacuum sealable container with internal pump mechanism30 Apr 2024US 11,970,328 B2HBL Holdings, LLC
- Multi-chamber compressor of mechanical vapor re-compression and water treatment methods4 Jul 2023US 11,691,895 B2
- Vacuum sealable container with internal pump mechanism21 Jun 2022US 11,365,041 B2HBL Holdings, LLC
- Vacuum Sealable Container with Internal Pump Mechanism1 Dec 2022US 2022/0380110 A1HBL Holdings, LLC
- Radial Piston Machine with Brake2 Jun 2022US 2022/0170460 A1Robert Bosch GmbH
- Displacement expanding apparatus and engine including the same23 Sep 2021US 2021/0293146 A1
- Vacuum Sealable Container with Internal Pump Mechanism4 Mar 2021US 2021/0061536 A1HBL Holdings, LLC
- Multi-Stage Compressor and Method of Controlling the Same25 Feb 2021US 2021/0054845 A1Hyundai Motor Company
Most cited
By later US patents
- Mechanically operated dispensing device for increasing discharge pressure and dispensing time41US 4,167,941 AJames D. Pauls, Ltd. (Limited Partnership) · 1979
- Internal combustion engine that completes four cycles in one revolution of the crankshaft28US 6,474,288 B12002
- Rigid-vane artifical heart25US 4,310,930 AU. S. Philips Corporation · 1982
- Mechanically operated mixing dispenser having a plurality of expansible chambers and a plurality of accumulating chambers20US 4,176,764 AJames D. Pauls, Ltd. · 1979
- Rotary actuator19US 5,700,027 AFichtel & Sachs AG · 1997