F15B 20/001
Double valve requiring the use of both hands simultaneously
Official title: {Double valve requiring the use of both hands simultaneously}
F15B20/001 (Double valve requiring the use of both hands simultaneously) appears on 55 US grants and 26 published applications in this corpus.
Search patents in F15B- Granted patents
- 55
- Published applications
- 26
- Assignees
- 23
- Inventors
- 65
- Latest grant
- 29 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 3 | 2 |
| 2005 | 2 | 1 |
| 2006 | 3 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 2 |
| 2024 | 3 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air control circuit equipped with safety feature29 Oct 2024US 12,129,878 B2SMC Corporation
- Valve arrangement10 Sep 2024US 12,085,177 B2Festo AG & Co.
- Safety valve device9 Apr 2024US 11,953,109 B2Festo AG & Co.
- Selector control valve3 Jan 2023US 11,543,039 B2Parker-Hannifin Corporation
- Cross-flow dual valve and method of manufacturing housing of the cross-flow dual valve1 Dec 2020US 10,851,902 B2Azbil TA Co., Ltd.
- Hydraulic system and passenger restraint system12 Feb 2026US 2026/0042412 A1HAWE Hydraulik SE
- Air control circuit equipped with safety feature28 Dec 2023US 2023/0417262 A1SMC Corporation
- Safety Valve Device1 Jun 2023US 2023/0167914 A1Festo AG & Co.
- Valve arrangement11 Aug 2022US 2022/0252167 A1Festo AG & Co.
- Selector control valve16 Sep 2021US 2021/0285467 A1Parker-Hannifin Corporation
Most cited
By later US patents
- Self-monitoring dual-spool servovalve24US 4,338,965 AMoog Inc. · 1982
- Valve safety indicating means21US 4,227,547 ARoss Operating Valve Company · 1980
- Monitor for double safety valves21US 4,542,767 ARoss Operating Valve Company · 1985
- Double safety valve for stamping presses and the like19US 4,257,455 ARoss Operating Valve Company · 1981
- Safety valve assembly17US 4,345,620 ATechnomatic AG · 1982