F15B 5/003
Transducers converting variations of physical quantities: characterised by variation of the pressure
Official title: {characterised by variation of the pressure in a nozzle or the like, e.g. nozzle-flapper system}
F15B5/003 (Transducers converting variations of physical quantities: characterised by variation of the pressure) appears on 69 US grants and 34 published applications in this corpus.
Search patents in F15B- Granted patents
- 69
- Published applications
- 34
- Assignees
- 40
- Inventors
- 100
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 2 |
| 2015 | 0 | 2 |
| 2016 | 2 | 4 |
| 2017 | 2 | 3 |
| 2018 | 1 | 2 |
| 2019 | 6 | 2 |
| 2020 | 2 | 4 |
| 2021 | 5 | 4 |
| 2022 | 3 | 2 |
| 2023 | 1 | 3 |
| 2024 | 2 | 0 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control system with dynamic reference pressure8 Sep 2026US 12,730,462 B2Fisher Controls International LLC
- Cylinder on demand hydraulic device14 Oct 2025US 12,442,398 B2Tonand Inc.
- Methods and apparatus for quantifying pneumatic volume usage via valve controllers13 May 2025US 12,298,171 B2Fisher Controls International LLC
- Positioning valve control system17 Sep 2024US 12,092,236 B2Hamilton Sundstrand Corporation
- Servo valve flapper and nozzle structure16 Jul 2024US 12,038,025 B2Hamilton Sundstrand Corporation
- Control System with Dynamic Reference Pressure13 Mar 2025US 2025/0085727 A1Fisher Controls International LLC
- Servo valve flapper and nozzle structure14 Dec 2023US 2023/0400042 A1Hamilton Sundstrand Corporation
- Positioning valve control system12 Oct 2023US 2023/0323976 A1Hamilton Sundstrand Corporation
- Cylinder on demand hydraulic device20 Jul 2023US 2023/0228284 A9Tonand Inc.
- Cylinder on demand hydraulic device13 Oct 2022US 2022/0325729 A1Tonand Inc.
Most cited
By later US patents
- Electropneumatic transducer69US 4,898,200 AShoketsu Kinzohu Kogyo Kabushiki Kaisha · 1990
- Switching valve and an electro-pneumatic pressure converter utilizing the same65US 4,617,952 AYamatake-Honeywell Co., Ltd. · 1986
- Piezo valve58US 5,343,894 AHoerbiger Ventilwerke Aktiengesellschaft · 1994
- Valve with piezoelectric lamina and a method of producing a valve38US 5,779,218 ABurkert Werke GmbH & Co. · 1998
- Electromagnetic flapper valve25US 3,982,554 ATekyo Keiki Company Limited · 1976