B60T 17/221
Procedure or apparatus for checking or keeping in a correct functioning condition
Official title: {Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems (hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M)}
B60T17/221 (Procedure or apparatus for checking or keeping in a correct functioning condition) appears on 1,739 US grants and 1,810 published applications in this corpus.
Search patents in B60T- Granted patents
- 1,739
- Published applications
- 1,810
- Assignees
- 553
- Inventors
- 3,519
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 11 | 0 |
| 1989 | 7 | 0 |
| 1990 | 12 | 0 |
| 1991 | 12 | 0 |
| 1992 | 8 | 0 |
| 1993 | 17 | 0 |
| 1994 | 11 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 15 | 0 |
| 1998 | 17 | 0 |
| 1999 | 20 | 0 |
| 2000 | 32 | 0 |
| 2001 | 41 | 10 |
| 2002 | 35 | 27 |
| 2003 | 32 | 20 |
| 2004 | 17 | 41 |
| 2005 | 19 | 20 |
| 2006 | 18 | 28 |
| 2007 | 10 | 25 |
| 2008 | 11 | 37 |
| 2009 | 12 | 30 |
| 2010 | 12 | 45 |
| 2011 | 13 | 31 |
| 2012 | 34 | 42 |
| 2013 | 40 | 58 |
| 2014 | 55 | 59 |
| 2015 | 56 | 53 |
| 2016 | 59 | 71 |
| 2017 | 64 | 72 |
| 2018 | 74 | 110 |
| 2019 | 78 | 133 |
| 2020 | 98 | 151 |
| 2021 | 94 | 189 |
| 2022 | 108 | 148 |
| 2023 | 123 | 131 |
| 2024 | 175 | 124 |
| 2025 | 145 | 95 |
| 2026 | 65 | 60 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Smart vehicle systems and control logic for active brake drag mitigation of electromechanical brake systems6 Oct 2026US 12,752,765 B1GM Global Technology Operations LLC
- Emergency driving and stop system29 Sep 2026US 12,746,899 B2Isuzu Motors Limited
- Brake system and method for controlling a brake system29 Sep 2026US 12,746,905 B2Ipgate AG
- Method for monitoring an electrically operated brake, and brake arrangement29 Sep 2026US 12,746,906 B2AUMOVIO Germany GmbH
- Rail monitoring system, method and devices29 Sep 2026US 12,746,907 B2Pennsy Digital Inc.
- Smart vehicle systems and control logic for active brake drag mitigation of electromechanical brake systems8 Oct 2026US 2026/0307638 A1GM Global Technology Operations LLC
- Method and system for providing a wake-up pedal function for a vehicle8 Oct 2026US 2026/0307639 A1
- Method for controlling a brake system of a motor vehicle with increased safety requirements8 Oct 2026US 2026/0307640 A1AUMOVIO Germany GmbH
- Electro-Pneumatic Brake Device with Automatic Ventilation of the Spring Brake24 Sep 2026US 2026/0285277 A1KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Apparatus and method for detecting failure of driving motor of electronic parking brake24 Sep 2026US 2026/0285283 A1Hyundai Mobis Co., Ltd.
Most cited
By later US patents
- Method and device for evaluating a sensor signal882US 6,539,297 B2Robert Bosch GmbH · 2003
- Driving pattern recognition and safety control442US 8,634,980 B1Google Inc. · 2014
- System and method for predicting behaviors of detected objects362US 8,660,734 B2Google Inc. · 2014
- Driving pattern recognition and safety control297US 8,965,621 B1Google Inc. · 2015
- Diagnosis and repair for autonomous vehicles249US 8,874,305 B2Google Inc. · 2014