F02K 9/54
Leakage detectors
Official title: Leakage detectors; Purging systems; Filtration systems
F02K9/54 (Leakage detectors) appears on 11 US grants and 9 published applications in this corpus.
Search patents in F02K- Granted patents
- 11
- Published applications
- 9
- Assignees
- 9
- Inventors
- 20
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Small satellite propulsion system utilizing liquid propellant ullage vapor14 Oct 2025US 12,442,350 B2The Aerospace Corporation
- Liquid propellant rocket engine turbopump drain17 May 2022US 11,333,074 B2Aerojet Rocketdyne, Inc.
- Distributed fuel modules with hydraulic flow circuit breakers and gaseous flow circuit breakers29 Mar 2022US 11,286,886 B2Hamilton Sundstrand Corporation
- Method for detecting leaks in a fuel circuit of a gas turbine fuel supply system3 Apr 2018US 9,933,327 B2General Electric Company
- Mechanical signal processing accumulator attenuation device and method14 May 2013US 8,438,930 B2United Launch Alliance, L.L.C.
- Distributed fuel modules with hydraulic flow circuit breakers and gaseous flow circuit breakers15 Oct 2020US 2020/0326730 A1Hamilton Sundstrand Corporation
- Liquid propellant rocket engine turbopump drain23 May 2019US 2019/0153955 A1Aerojet Rocketdyne, Inc.
- Small satellite propulsion system utilizing liquid propellant ullage vapor21 Dec 2017US 2017/0363044 A1The Aerospace Corporation
- Method for Detecting Leaks In A Fuel Circuit of a Gas Turbine Fuel Supply System23 Feb 2017US 2017/0052087 A1General Electric Company
- Mechanical signal processing accumulator attenuation device and method8 Jul 2010US 2010/0170222 A1United Launch Alliance, L.L.C.
Most cited
By later US patents
- High-performance dual-mode integral propulsion system23US 5,282,357 ATRW Inc. · 1994
- Satellite propulsion and power system23US 5,417,049 ATRW Inc. · 1995
- Satellite propulsion and power system9US 5,572,865 ATRW Inc. · 1996
- Cyrogenic upper stage for reusable launch vehicle8US 5,862,670 ABoeing North American, Inc. · 1999
- Method for detecting overpressure inside a compartment associated with a gas turbine nacelle5US 7,930,928 B2ROLLS-ROYCE plc · 2011