E03D 3/02
Self-closing flushing valves
Official title: Self-closing flushing valves (self-closing valves in general F16K21/04)
E03D3/02 (Self-closing flushing valves) appears on 265 US grants and 235 published applications in this corpus.
Search patents in E03D- Granted patents
- 265
- Published applications
- 235
- Assignees
- 66
- Inventors
- 295
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 1 |
| 2002 | 8 | 1 |
| 2003 | 4 | 12 |
| 2004 | 6 | 16 |
| 2005 | 14 | 20 |
| 2006 | 8 | 11 |
| 2007 | 8 | 10 |
| 2008 | 7 | 10 |
| 2009 | 10 | 10 |
| 2010 | 2 | 11 |
| 2011 | 10 | 16 |
| 2012 | 10 | 6 |
| 2013 | 8 | 9 |
| 2014 | 5 | 13 |
| 2015 | 10 | 2 |
| 2016 | 10 | 11 |
| 2017 | 11 | 8 |
| 2018 | 10 | 15 |
| 2019 | 5 | 6 |
| 2020 | 12 | 10 |
| 2021 | 8 | 10 |
| 2022 | 7 | 3 |
| 2023 | 3 | 6 |
| 2024 | 4 | 7 |
| 2025 | 7 | 4 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wall flush valve22 Sep 2026US 12,742,321 B2Kohler Co.
- Composite flush valve4 Aug 2026US 12,698,622 B2AS America, Inc.
- Connecting rod drive mechanism for water discharge valve and water discharge valve having said mechanism14 Apr 2026US 12,601,421 B2Xiamen R&T Plumbing Technology Co., Ltd.
- Flush valve7 Apr 2026US 12,595,647 B2AS America, Inc.
- Quiet flush actuator for pressure-assist toilets30 Dec 2025US 12,509,868 B2Kohler Co.
- Offset control stop6 Aug 2026US 2026/0226988 A1
- Urinal9 Jul 2026US 2026/0193875 A1Lixil (China) Investment Co., Ltd.
- Flush valve assembly18 Jun 2026US 2026/0168224 A1
- Flushometer System23 Apr 2026US 2026/0110161 A1Sloan Valve Company
- Quiet flush actuator for pressure-assist toilets16 Apr 2026US 2026/0103877 A1Kohler Co.
Most cited
By later US patents
- Leak Detector148US 7,383,721 B2Arichell Technologies, Inc. · 2008
- Flush valve with an electronic sensor and solenoid valve133US 4,793,588 ACoyne & Delany Co. · 1988
- Diaphragm stop for sensor-operated, battery-powered flush valve129US 5,244,179 ASloan Valve Company · 1993
- Automatic valve assembly112US 5,431,181 AZurn Industries, LLC · 1995
- Flush system110US 5,125,621 ARecurrent Solutions Limited Partnership · 1992