F16D 25/14
Fluid pressure control
Official title: {Fluid pressure control}
F16D25/14 (Fluid pressure control) appears on 567 US grants and 366 published applications in this corpus.
Search patents in F16D- Granted patents
- 567
- Published applications
- 366
- Assignees
- 208
- Inventors
- 1,095
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 5 | 0 |
| 1983 | 10 | 0 |
| 1984 | 7 | 0 |
| 1985 | 10 | 0 |
| 1986 | 19 | 0 |
| 1987 | 17 | 0 |
| 1988 | 7 | 0 |
| 1989 | 9 | 0 |
| 1990 | 11 | 0 |
| 1991 | 12 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 12 |
| 2002 | 21 | 11 |
| 2003 | 23 | 18 |
| 2004 | 14 | 23 |
| 2005 | 13 | 9 |
| 2006 | 18 | 11 |
| 2007 | 7 | 3 |
| 2008 | 3 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 2 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 14 |
| 2014 | 7 | 11 |
| 2015 | 10 | 16 |
| 2016 | 16 | 25 |
| 2017 | 21 | 33 |
| 2018 | 23 | 41 |
| 2019 | 30 | 36 |
| 2020 | 41 | 36 |
| 2021 | 42 | 28 |
| 2022 | 20 | 10 |
| 2023 | 18 | 13 |
| 2024 | 13 | 7 |
| 2025 | 11 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Selective fluid delivery unit for a power transmission20 Jan 2026US 12,529,400 B2
- Lubrication management system for a transmission having a high speed clutch23 Dec 2025US 12,504,046 B2Deere & Company
- Vibration damper in a hydraulic friction clutch actuation system of a motor vehicle23 Dec 2025US 12,504,049 B2Raicam Driveline S.R.L.
- Built-in magnetic filter module and clutch separation system9 Dec 2025US 12,491,521 B2Schaeffler Technologies AG & Co. KG
- Piston clutch4 Nov 2025US 12,460,685 B1Deere & Company
- Selective fluid delivery unit for a power transmission20 Nov 2025US 2025/0354588 A1
- Counter pressure chamber for hydraulic clutch5 Jun 2025US 2025/0180078 A1Dana Belgium N.V.
- Lubrication management system for a transmission having a high speed clutch20 Mar 2025US 2025/0092921 A1Deere & Company
- Hydraulic piston design27 Feb 2025US 2025/0067309 A1Allison Transmission, Inc.
- Vibration damper in a hydraulic friction clutch actuation system of a motor vehicle6 Feb 2025US 2025/0043834 A1Raicam Driveline S.R.L.
Most cited
By later US patents
- Belt type continuous reduction gear mechanism147US 4,560,369 AHonda Giken Kogyo Kabushiki Kaisha · 1985
- Slip control system for a clutch85US 4,468,988 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1984
- Dual clutch transmission clutch cooling control method58US 6,715,597 B1BorgWarner Inc. · 2004
- Liquid pressure apparatus57US 4,407,125 AAutomotive Products plc · 1983
- Multiple-clutch device45US 6,523,657 B1Mannesmann Sachs AG · 2003