E03B 9/14
Draining devices for hydrants
E03B9/14 (Draining devices for hydrants) appears on 109 US grants and 67 published applications in this corpus.
Search patents in E03B- Granted patents
- 109
- Published applications
- 67
- Assignees
- 44
- Inventors
- 109
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 4 | 0 |
| 2005 | 4 | 2 |
| 2006 | 1 | 5 |
| 2007 | 3 | 4 |
| 2008 | 3 | 1 |
| 2009 | 0 | 4 |
| 2010 | 3 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 2 | 2 |
| 2015 | 3 | 5 |
| 2016 | 8 | 7 |
| 2017 | 3 | 3 |
| 2018 | 3 | 5 |
| 2019 | 1 | 4 |
| 2020 | 9 | 2 |
| 2021 | 1 | 2 |
| 2022 | 6 | 6 |
| 2023 | 3 | 2 |
| 2024 | 2 | 3 |
| 2025 | 2 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Freeze resistant wall hydrant17 Mar 2026US 12,577,762 B2
- Industrial hydrant13 Jan 2026US 12,523,021 B2American Cast Iron Pipe Company
- Auto-draining diverter valve30 Dec 2025US 12,510,174 B2Geberit International SG
- Hydrant nozzle cap spacer1 Jul 2025US 12,345,028 B2Mueller International, LLC
- Hydrant nozzle cap spacer18 Jun 2024US 12,012,732 B2Mueller International, LLC
- Freeze Resistant Wall Hydrant9 Jul 2026US 2026/0193871 A1
- Auto-draining diverter valve4 Jun 2026US 2026/0153158 A1Geberit International AG
- Hydrant nozzle cap spacer12 Mar 2026US 2026/0071413 A1Mueller International, LLC
- Industrial Hydrant12 Jun 2025US 2025/0188718 A1American Cast Iron Pipe Company
- Freeze resistant wall hydrant26 Dec 2024US 2024/0426087 A1
Most cited
By later US patents
- Fire hydrant with drain valve and backflow preventer mechanism72US 3,980,097 AMueller Co. · 1976
- Anti-syphon freezeless water hydrant45US 4,475,570 APrier Brass Manufacturing Co. · 1984
- Frost-resistant hydrant42US 5,392,805 AAmerikam, Inc. · 1995
- Freeze protection device for wall hydrants/faucets42US 6,142,172 AWCM Industries, Inc. · 2000
- Flushing attachment for hydrant34US 6,948,512 B2John C. Kupferle Foundry Company · 2005