F16K 5/185
By means of conical surfaces
Official title: {by means of conical surfaces}
F16K5/185 (By means of conical surfaces) appears on 9 US grants and 5 published applications in this corpus.
Search patents in F16K- Granted patents
- 9
- Published applications
- 5
- Assignees
- 8
- Inventors
- 24
- Latest grant
- 10 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 2 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Valve seal integrity verification systems and methods10 Oct 2023US 11,781,937 B1Duraseat LLC
- Double positive isolation ball valve20 Jul 2021US 11,067,179 B2Cameron International Corporation
- Through-hole plug19 Feb 2019US 10,208,864 B1
- Weld on insert valve20 Feb 2018US 9,897,240 B2Team Industrial Services, Inc.
- Plug-valve having a plug assembly with retractible seals that can be removed without leakage6 Aug 1996US 5,542,644 AJohnston Pump/General Valve, Inc.
- Valve seal integrity verification systems and methods28 Sep 2023US 2023/0304885 A1Duraseat LLC
- High Pressure Plug Valve20 Sep 2018US 2018/0266573 A1Kerr Machine Co.
- Double positive isolation ball valve30 Aug 2018US 2018/0245697 A1Cameron International Corporation
- Weld on insert valve20 Oct 2016US 2016/0305593 A1Team Industrial Services, Inc.
- Gas shut-off valve assembly9 Feb 2006US 2006/0027272 A1
Most cited
By later US patents
- Valves having involute sealing surfaces14US 5,305,988 AHalliburton Company · 1994
- Plug-valve having a plug assembly with retractible seals that can be removed without leakage5US 5,542,644 AJohnston Pump/General Valve, Inc. · 1996
- Blocking valve for liquids4US 4,526,200 AErkki Niskanen Oy · 1985
- Through-hole plug3US 10,208,864 B12019
- Double positive isolation ball valve3US 11,067,179 B2Cameron International Corporation · 2021