F16K 1/446
With additional cleaning or venting means between the two seats
Official title: {with additional cleaning or venting means between the two seats}
F16K1/446 (With additional cleaning or venting means between the two seats) appears on 140 US grants and 92 published applications in this corpus.
Search patents in F16K- Granted patents
- 140
- Published applications
- 92
- Assignees
- 78
- Inventors
- 185
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 2 | 4 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 3 | 6 |
| 2011 | 3 | 11 |
| 2012 | 3 | 5 |
| 2013 | 9 | 6 |
| 2014 | 9 | 3 |
| 2015 | 5 | 5 |
| 2016 | 5 | 5 |
| 2017 | 6 | 6 |
| 2018 | 3 | 4 |
| 2019 | 5 | 5 |
| 2020 | 4 | 3 |
| 2021 | 3 | 1 |
| 2022 | 0 | 3 |
| 2023 | 2 | 5 |
| 2024 | 3 | 6 |
| 2025 | 7 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve assembly and piston with double o-ring interface and relief passage4 Aug 2026US 12,698,833 B2Bendix Commercial Vehicle Systems LLC
- Flow control arrangement and method of cleaning such an arrangement19 May 2026US 12,631,258 B2Alfa Laval Corporate AB
- Valve drive and method of cleaning a valve6 Jan 2026US 12,516,740 B2Buerkert Werke GmbH
- Actuator arrangement and a method for moving a valve member into a cleaning position30 Dec 2025US 12,510,165 B2Alfa Laval Corporate AB
- ALD apparatus, method and valve4 Nov 2025US 12,460,297 B2Picosun Oy
- Smart valve monitoring system and method16 Apr 2026US 2026/0104106 A1Pentair Südmo GmbH
- Valve assembly and piston with double o-ring interface and relief passage21 Aug 2025US 2025/0264160 A1Bendix Commercial Vehicle Systems LLC
- Actuator arrangement and a method for moving a valve member into a cleaning position20 Feb 2025US 2025/0060040 A1Alfa Laval Corporate AB
- Flow control arrangment and method of cleaning such an arrangement5 Dec 2024US 2024/0401704 A1Alfa Laval Corporate AB
- Valve drive and method of cleaning a valve7 Nov 2024US 2024/0369142 A1Buerkert Werke GmbH
Most cited
By later US patents
- Three-way-valve72US 5,172,728 AT.H.I. System Corporation · 1992
- Cleanable sampling valve46US 4,458,543 AOtto Tuchenhagen GmbH & Co. KG · 1984
- Double seat valve with leak control38US 4,304,251 A1981
- Bleed valve assembly for double block and bleed system32US 4,846,212 AKeystone International, Inc. · 1989
- Double block valve with proving system31US 6,968,851 B2ASCO Controls, LP · 2005