F16D 2121/02
Fluid pressure
F16D2121/02 (Fluid pressure) appears on 1,670 US grants and 1,497 published applications in this corpus.
Search patents in F16D- Granted patents
- 1,670
- Published applications
- 1,497
- Assignees
- 620
- Inventors
- 3,077
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 28 | 0 |
| 1977 | 21 | 0 |
| 1978 | 6 | 0 |
| 1979 | 13 | 0 |
| 1980 | 16 | 0 |
| 1981 | 15 | 0 |
| 1982 | 10 | 0 |
| 1983 | 14 | 0 |
| 1984 | 13 | 0 |
| 1985 | 17 | 0 |
| 1986 | 26 | 0 |
| 1987 | 22 | 0 |
| 1988 | 15 | 0 |
| 1989 | 22 | 0 |
| 1990 | 12 | 0 |
| 1991 | 23 | 0 |
| 1992 | 18 | 0 |
| 1993 | 18 | 0 |
| 1994 | 19 | 0 |
| 1995 | 10 | 0 |
| 1996 | 13 | 0 |
| 1997 | 21 | 0 |
| 1998 | 17 | 0 |
| 1999 | 26 | 0 |
| 2000 | 24 | 0 |
| 2001 | 43 | 6 |
| 2002 | 46 | 21 |
| 2003 | 31 | 26 |
| 2004 | 21 | 38 |
| 2005 | 22 | 45 |
| 2006 | 31 | 38 |
| 2007 | 19 | 54 |
| 2008 | 20 | 39 |
| 2009 | 29 | 56 |
| 2010 | 20 | 54 |
| 2011 | 37 | 55 |
| 2012 | 36 | 50 |
| 2013 | 40 | 76 |
| 2014 | 69 | 51 |
| 2015 | 64 | 64 |
| 2016 | 60 | 65 |
| 2017 | 61 | 66 |
| 2018 | 59 | 97 |
| 2019 | 86 | 81 |
| 2020 | 79 | 100 |
| 2021 | 78 | 82 |
| 2022 | 61 | 90 |
| 2023 | 59 | 73 |
| 2024 | 65 | 75 |
| 2025 | 47 | 55 |
| 2026 | 48 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Disc brake device6 Oct 2026US 12,752,756 B2Akebono Brake Industry Co., Ltd.
- Drum brake6 Oct 2026US 12,753,808 B2KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Hydraulic brake with travel adjustment mechanism6 Oct 2026US 12,753,817 B2Cixi Energy Refined Fishing Co., Ltd.
- Hydromechanical brake motive apparatus15 Sep 2026US 12,735,013 B2ZF Active Safety US Inc.
- Anti-rollback braking system for wheelchairs8 Sep 2026US 12,728,053 B2
- Method for obtaining information on the wear condition of a vehicle braking system8 Oct 2026US 2026/0309199 A1
- Brake mechanism, brake system, and vehicle10 Sep 2026US 2026/0264653 A1Yinwang Intelligent Technologies Co., Ltd.
- Braking device27 Aug 2026US 2026/0249829 A1Advics Co., Ltd.
- Braking assembly for a work vehicle20 Aug 2026US 2026/0241908 A1
- Electro-actuated disc brake caliper, disc brake and braking system20 Aug 2026US 2026/0241913 A1Brembo S.p.A.
Most cited
By later US patents
- Rotating gantry of particle beam therapy system189US 7,372,053 B2Hitachi, Ltd. · 2008
- Brake actuating apparatus for a vehicle98US 5,348,123 AAkebono Brake Industry Co., Ltd. · 1994
- Brake apparatus for a motor driven saw blade97US 4,145,940 A1979
- Electrical drive for a wheel hub94US 6,328,123 B1DaimlerChrysler AG · 2001
- Electrically operated disc brake with back-off protector73US 4,804,073 AAllied-Signal Inc. · 1989