F16K 21/00
Fluid-delivery valves
Official title: Fluid-delivery valves, {e.g. self-closing valves}(for liquid handling B67D; for flushing devices for water-closets or the like E03D)
F16K21/00 (Fluid-delivery valves) appears on 637 US grants and 491 published applications in this corpus.
Search patents in F16K- Granted patents
- 637
- Published applications
- 491
- Assignees
- 381
- Inventors
- 1,076
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 6 | 0 |
| 1980 | 12 | 0 |
| 1981 | 13 | 0 |
| 1982 | 8 | 0 |
| 1983 | 3 | 0 |
| 1984 | 13 | 0 |
| 1985 | 12 | 0 |
| 1986 | 19 | 0 |
| 1987 | 14 | 0 |
| 1988 | 9 | 0 |
| 1989 | 9 | 0 |
| 1990 | 13 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 11 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 2 |
| 2002 | 6 | 7 |
| 2003 | 8 | 8 |
| 2004 | 12 | 9 |
| 2005 | 4 | 10 |
| 2006 | 8 | 12 |
| 2007 | 10 | 11 |
| 2008 | 6 | 11 |
| 2009 | 4 | 17 |
| 2010 | 8 | 13 |
| 2011 | 9 | 14 |
| 2012 | 11 | 14 |
| 2013 | 9 | 12 |
| 2014 | 14 | 33 |
| 2015 | 20 | 24 |
| 2016 | 22 | 19 |
| 2017 | 25 | 32 |
| 2018 | 18 | 44 |
| 2019 | 31 | 39 |
| 2020 | 39 | 38 |
| 2021 | 39 | 35 |
| 2022 | 28 | 18 |
| 2023 | 23 | 16 |
| 2024 | 18 | 26 |
| 2025 | 21 | 14 |
| 2026 | 7 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control structure with automatic reset function when water is turned off and water outlet device with automatic reset function when water is turned off1 Sep 2026US 12,722,175 B2Xiamen Solex High-Tech Industries Co., Ltd.
- Automatic control water valve and automatic water feeder26 May 2026US 12,638,094 B2
- Float-actuated fluid valve assembly19 May 2026US 12,631,261 B1A.O. International II, Inc.
- Optimized control of oilfield separator level and dump valves7 Apr 2026US 12,596,388 B2Devon Energy Corporation
- Valve device10 Mar 2026US 12,571,484 B2Aisin Corporation
- Recirculation valve1 Oct 2026US 2026/0298354 A1Kyungdong Navien Co., Ltd.
- Interactive Beverage Dispensing System and Method1 Oct 2026US 2026/0298366 A1
- System and method for fluid handling in a shower or bath24 Sep 2026US 2026/0286668 A1
- Dispensing Pump24 Sep 2026US 2026/0286943 A1Verity Packaging, Inc.
- Filling valve assembly with bayonet mount for bottle alignment component13 Aug 2026US 2026/0235220 A1Fogg Filler Company
Most cited
By later US patents
- Low turbulence valve96US 9,416,887 B22016
- Water balloon filling valve82US 5,439,199 AThe National Latex Products Company · 1995
- Flush valves78US 4,272,052 AZurn Industries, LLC · 1981
- Magnetic automatic stop valve73US 6,695,004 B1Alaris Medical Systems, Inc. · 2004
- Diaphragm-type pilot valve having a self-cleaning control orifice69US 5,456,279 ARecurrent Solutions Limited Partnership · 1995