F04B 1/124
Pistons
F04B1/124 (Pistons) appears on 269 US grants and 211 published applications in this corpus.
Search patents in F04B- Granted patents
- 269
- Published applications
- 211
- Assignees
- 143
- Inventors
- 520
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 0 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 5 | 0 |
| 1998 | 15 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 0 |
| 2002 | 7 | 1 |
| 2003 | 5 | 9 |
| 2004 | 5 | 8 |
| 2005 | 5 | 6 |
| 2006 | 6 | 6 |
| 2007 | 2 | 8 |
| 2008 | 6 | 6 |
| 2009 | 7 | 6 |
| 2010 | 5 | 2 |
| 2011 | 3 | 7 |
| 2012 | 2 | 7 |
| 2013 | 3 | 6 |
| 2014 | 3 | 5 |
| 2015 | 2 | 11 |
| 2016 | 4 | 26 |
| 2017 | 16 | 16 |
| 2018 | 9 | 13 |
| 2019 | 16 | 14 |
| 2020 | 15 | 11 |
| 2021 | 9 | 11 |
| 2022 | 8 | 9 |
| 2023 | 8 | 4 |
| 2024 | 7 | 4 |
| 2025 | 7 | 7 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotary swash plate hydraulic pump15 Sep 2026US 12,736,037 B2Kawasaki Jukogyo Kabushiki Kaisha
- Axial piston pumps25 Aug 2026US 12,716,404 B2Zhong Moyuan Technology (Shanghai) Co., Ltd.
- Slipper component with ceramic surface11 Aug 2026US 12,704,117 B2Ocean Pacific Technologies
- Hydraulic piston pump/motor with non-cantilevered pistons17 Feb 2026US 12,553,344 B2Goodrich Corporation
- Hydrostatic shoe with face seal9 Dec 2025US 12,492,637 B2Goodrich Corporation
- Improved axial piston hydraulic machine6 Aug 2026US 2026/0226888 A1
- Slipper component with ceramic surface30 Jul 2026US 2026/0218689 A1Ocean Pacific Technologies
- Axial piston machine having a seal ring which is spherical in sections14 May 2026US 2026/0132784 A1Moog Inc.
- Pressure source unit7 May 2026US 2026/0126031 A1Kawasaki Jukogyo Kabushiki Kaisha
- Compression ring for a piston slipper arrangement, piston slipper arrangement, and axial piston machine30 Apr 2026US 2026/0117755 A1
Most cited
By later US patents
- Method and apparatus for pressurizing fluids106US 5,879,137 AJetec Company · 1999
- Pump system including valve cartridge assembly with a suction valve in line with a discharge valve59US 9,670,922 B2Gardner Denver Water Jetting Systems, Inc. · 2017
- Pump assembly57US 9,528,508 B2Schlumberger Technology Corporation · 2016
- Swashplate type axial-piston pump39US 6,406,271 B12002
- Piston for hydrostatic axial and radial piston machines and method for the manufacture thereof35US 5,216,943 AHydromatik GmbH · 1993