F16K 15/044
Spring-loaded
Official title: {spring-loaded}
F16K15/044 (Spring-loaded) appears on 447 US grants and 411 published applications in this corpus.
Search patents in F16K- Granted patents
- 447
- Published applications
- 411
- Assignees
- 322
- Inventors
- 937
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 10 | 0 |
| 1986 | 5 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 8 | 3 |
| 2002 | 4 | 12 |
| 2003 | 11 | 16 |
| 2004 | 8 | 10 |
| 2005 | 10 | 18 |
| 2006 | 9 | 18 |
| 2007 | 6 | 7 |
| 2008 | 10 | 14 |
| 2009 | 1 | 13 |
| 2010 | 7 | 10 |
| 2011 | 8 | 10 |
| 2012 | 8 | 8 |
| 2013 | 8 | 11 |
| 2014 | 9 | 17 |
| 2015 | 9 | 16 |
| 2016 | 9 | 13 |
| 2017 | 21 | 56 |
| 2018 | 20 | 27 |
| 2019 | 37 | 20 |
| 2020 | 25 | 20 |
| 2021 | 24 | 22 |
| 2022 | 13 | 16 |
| 2023 | 20 | 18 |
| 2024 | 11 | 10 |
| 2025 | 10 | 17 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Additively manufactured hydraulic valve components8 Sep 2026US 12,729,772 B2Caterpillar Inc.
- Electronic vaporiser system28 Jul 2026US 12,690,610 B2Ayr Ltd.
- Pressure relief valve with dual-function spring26 May 2026US 12,638,092 B2Phinia Jersey Holdings LLC
- Valves for controlling flow of pressurized fluid to a tool5 May 2026US 12,618,485 B2Enerpac Tool Group Corp.
- Rocker arm assembly7 Apr 2026US 12,595,753 B2Eaton Intelligent Power Limited
- Atomizer tip having a one-way valve1 Oct 2026US 2026/0295616 A1Advanced Medical Engineering, LLC
- Valves for reciprocating downhole pumps and related systems and methods13 Aug 2026US 2026/0235014 A1ChampionX LLC
- Check valve with ball stabilizer30 Jul 2026US 2026/0218803 A1Dixon Valve and Coupling Company
- Liquid cooling automatic disconnect component16 Jul 2026US 2026/0201969 A1Dell Products L. P.
- Cartridge and wet cleaning assembly23 Apr 2026US 2026/0108124 A1Versuni Holding B.V.
Most cited
By later US patents
- Valve apparatus and valve system using thereof127US 6,391,019 B1Seiko Instruments Inc. · 2002
- Pressure-variable valve device and set-pressure adjusting device for the valve device123US 6,702,249 B2Seiko Instruments Inc. · 2004
- Variable pressure valve apparatus116US 6,684,904 B2Seiko Instruments Inc. · 2004
- Flow control valve103US 4,022,113 A1977
- Chemical injection valve with openable bypass100US 4,399,871 AOtis Engineering Corporation · 1983