F03C 1/0438
To cylindrical distribution members
Official title: {to cylindrical distribution members}
F03C1/0438 (To cylindrical distribution members) appears on 21 US grants and 10 published applications in this corpus.
Search patents in F03C- Granted patents
- 21
- Published applications
- 10
- Assignees
- 14
- Inventors
- 45
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 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 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 2 |
| 2019 | 0 | 0 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 1 |
| 2024 | 2 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrostatic rotating machine with radial pistons and with improved distribution17 Feb 2026US 12,553,501 B2Robert Bosch GmbH
- Multi piston machine with at least three switchable displacement volumes2 Sep 2025US 12,404,832 B2Robert Bosch GmbH
- Radial piston machine with brake17 Dec 2024US 12,169,006 B2Robert Bosch GmbH
- Radial piston hydraulic device distributing flow by pilot operated check valves and operating method thereof29 Oct 2024US 12,129,874 B2Huaqiao University
- Hydraulic machine having two cylinder capacities and a safety valve30 Jun 2020US 10,697,442 B2Poclain Hydraulics Industrie
- Hydrostatic Rotating Machine with Radial Pistons and with Improved Distribution1 May 2025US 2025/0137517 A1Robert Bosch GmbH
- Radial piston hydraulic device distributing flow by pilot operated check valves and operating method thereof27 Jul 2023US 2023/0235757 A1Huaqiao University
- Multi Piston Machine with at least Three Switchable Displacement Volumes8 Dec 2022US 2022/0389902 A1Robert Bosch GmbH
- Radial Piston Machine with Brake2 Jun 2022US 2022/0170460 A1Robert Bosch GmbH
- Radial piston pumps and motors19 Jul 2018US 2018/0202421 A1Domin Fluid Power Limited
Most cited
By later US patents
- Rotary hydrostatic radial piston machines44US 4,686,829 AUnipat AG · 1987
- Rotary cam internal combustion radial engine37US 3,964,450 A1976
- Radial piston and cylinder compressed gas motor18US 5,049,039 APneumotor, Inc. · 1991
- Rotary-piston internal combustion engine17US 3,931,810 A1976
- Devices which take in and expel fluid by a chamber which may border a coned ring8US 4,745,846 A1988