E03C 1/1225
Of air admittance valves
Official title: {of air admittance valves (structural details of air admittance valves F16K24/06)}
E03C1/1225 (Of air admittance valves) appears on 93 US grants and 73 published applications in this corpus.
Search patents in E03C- Granted patents
- 93
- Published applications
- 73
- Assignees
- 36
- Inventors
- 119
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 3 |
| 2004 | 3 | 3 |
| 2005 | 3 | 1 |
| 2006 | 1 | 6 |
| 2007 | 2 | 1 |
| 2008 | 3 | 2 |
| 2009 | 0 | 3 |
| 2010 | 2 | 3 |
| 2011 | 2 | 1 |
| 2012 | 1 | 4 |
| 2013 | 3 | 4 |
| 2014 | 1 | 2 |
| 2015 | 4 | 3 |
| 2016 | 1 | 4 |
| 2017 | 5 | 6 |
| 2018 | 6 | 5 |
| 2019 | 4 | 3 |
| 2020 | 1 | 2 |
| 2021 | 4 | 4 |
| 2022 | 2 | 1 |
| 2023 | 4 | 3 |
| 2024 | 1 | 4 |
| 2025 | 5 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Plumbing vent plug11 Aug 2026US 12,704,256 B2
- Water stopping mechanism configured for water outlet device and water outlet device10 Feb 2026US 12,544,774 B2Xiamen Lota International Co., Ltd.
- Drain pipe connector system9 Dec 2025US 12,492,539 B2Physiclean Ltd.
- Dual air admittance valve21 Oct 2025US 12,448,762 B2
- Air admittance valve20 May 2025US 12,305,376 B2Xmark SP LLC
- Air admittance valve assembly21 May 2026US 2026/0139750 A1
- Dual air admittance valve26 Mar 2026US 2026/0085507 A1
- Plumbing vent plug17 Jul 2025US 2025/0230928 A1
- Dual air admittance valve17 Apr 2025US 2025/0122707 A1
- Dual air admittance valve with locking mechanism and pressure indicator16 Jan 2025US 2025/0020228 A1
Most cited
By later US patents