F03C 1/04
With cylinders in star or fan arrangement
Official title: with cylinders in star or fan arrangement {(F03C1/22 takes precedence)}
F03C1/04 (With cylinders in star or fan arrangement) appears on 244 US grants and 179 published applications in this corpus.
Search patents in F03C- Granted patents
- 244
- Published applications
- 179
- Assignees
- 93
- Inventors
- 369
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 2 |
| 2002 | 7 | 2 |
| 2003 | 3 | 3 |
| 2004 | 3 | 6 |
| 2005 | 3 | 5 |
| 2006 | 3 | 4 |
| 2007 | 5 | 5 |
| 2008 | 2 | 7 |
| 2009 | 5 | 7 |
| 2010 | 1 | 4 |
| 2011 | 2 | 4 |
| 2012 | 10 | 9 |
| 2013 | 7 | 8 |
| 2014 | 2 | 12 |
| 2015 | 3 | 7 |
| 2016 | 8 | 8 |
| 2017 | 6 | 10 |
| 2018 | 5 | 13 |
| 2019 | 11 | 8 |
| 2020 | 10 | 8 |
| 2021 | 8 | 9 |
| 2022 | 8 | 10 |
| 2023 | 10 | 7 |
| 2024 | 5 | 7 |
| 2025 | 7 | 8 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid-pressure rotary actuator for clamping systems29 Sep 2026US 12,746,641 B2Rapid Design Solutions, LLC
- Hydrostatic radial piston unit26 May 2026US 12,638,057 B2Danfoss A/S
- Thermo-magnetic motor10 Mar 2026US 12,571,357 B1
- Hydrostatic rotating machine with radial pistons and with improved distribution17 Feb 2026US 12,553,501 B2Robert Bosch GmbH
- Hydrostatic radial piston unit13 Jan 2026US 12,523,201 B2Danfoss A/S
- Hydraulic motor8 Oct 2026US 2026/0309121 A1Worldpower AS
- Hydrostatic Rotary Machine Having Pins That Engage Grooves of a Cam Ring24 Sep 2026US 2026/0286928 A1Robert Bosch GmbH
- Hydraulic machine6 Aug 2026US 2026/0226967 A1Danfoss Scotland Limited
- Improved assembly structure for a steering yoke of a hydraulic machine11 Jun 2026US 2026/0159156 A1Poclain Hydraulics Industrie
- Improved support structure for a steering member4 Jun 2026US 2026/0152226 A1Poclain Hydraulics Industrie
Most cited
By later US patents
- Hydro-electric hybrid drive system for motor vehicle46US 7,841,432 B2Bosch Rexroth AG · 2010
- Rotary hydrostatic radial piston machines44US 4,686,829 AUnipat AG · 1987
- Rotary cam internal combustion radial engine37US 3,964,450 A1976
- Hydrostatic motor unit27US 6,248,037 B1Linde Aktiengesellschaft · 2001
- Planetary-harmonic motor26US 7,086,309 B2The Johns Hopkins University · 2006