B60T 11/30
Bleed valves for hydraulic brake systems
B60T11/30 (Bleed valves for hydraulic brake systems) appears on 67 US grants and 32 published applications in this corpus.
Search patents in B60T- Granted patents
- 67
- Published applications
- 32
- Assignees
- 43
- Inventors
- 114
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 3 | 2 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 2 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 4 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bleed valve and brake systems using same25 Aug 2026US 12,715,409 B2ZF Active Safety US Inc.
- Vented valve and brake system using same16 Jun 2026US 12,654,667 B2ZF Active Safety US Inc.
- Hydraulic fitting25 Feb 2025US 12,233,826 B2RIVA GmbH Engineering
- Master cylinder for a braking system10 Sep 2024US 12,084,009 B2Polaris Industries Inc.
- Master cylinder for a braking system14 Mar 2023US 11,603,082 B2Polaris Industries Inc.
- Hydraulic fitting3 Oct 2024US 2024/0326765 A1Fahrwerker GmbH
- Vented valve and brake system using same5 Sep 2024US 2024/0294156 A1ZF Active Safety US Inc.
- Bleed valve and brake systems using same5 Sep 2024US 2024/0294157 A1ZF Active Safety US Inc.
- Pre-filled brake apply module and automated bleeding18 Apr 2024US 2024/0123959 A1GM Global Technology Operations LLC
- Master cylinder for a braking system22 Jun 2023US 2023/0192051 A1Polaris Industries Inc.
Most cited
By later US patents
- Bleed valve for bleeding fluid from a hydraulic circuit105US 5,853,071 AMcDonnell Douglas Corporation · 1998
- Reservoirs for liquid pressure control systems and a method of filling the same50US 4,503,678 AAutomotive Products plc · 1985
- Corrosion resistant bleeder screw arrangement25US 4,470,577 AGeneral Motors Corporation · 1984
- Reservoirs for liquid pressure control systems24US 4,506,507 AAutomotive Products plc · 1985
- Syringe-dispensed brake fluid for filling and purging master cylinder circuit from slave22US 4,785,629 A1988