E03B 9/04
Column hydrants
E03B9/04 (Column hydrants) appears on 283 US grants and 203 published applications in this corpus.
Search patents in E03B- Granted patents
- 283
- Published applications
- 203
- Assignees
- 67
- Inventors
- 316
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 9 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 0 |
| 2003 | 2 | 3 |
| 2004 | 6 | 1 |
| 2005 | 4 | 5 |
| 2006 | 5 | 5 |
| 2007 | 4 | 5 |
| 2008 | 2 | 3 |
| 2009 | 5 | 2 |
| 2010 | 2 | 4 |
| 2011 | 1 | 4 |
| 2012 | 1 | 2 |
| 2013 | 2 | 9 |
| 2014 | 3 | 5 |
| 2015 | 11 | 6 |
| 2016 | 6 | 9 |
| 2017 | 12 | 13 |
| 2018 | 10 | 12 |
| 2019 | 16 | 17 |
| 2020 | 23 | 26 |
| 2021 | 15 | 13 |
| 2022 | 15 | 20 |
| 2023 | 32 | 18 |
| 2024 | 9 | 12 |
| 2025 | 10 | 3 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrant nozzle cap adapter18 Aug 2026US 12,709,879 B2Mueller International, LLC
- Expanding systems for break check water dampening18 Aug 2026US 12,710,111 B2Mueller International, LLC
- Self-leveling sensor assembly17 Mar 2026US 12,578,245 B2Mueller International, LLC
- System for remote control operation of hydrant10 Mar 2026US 12,571,188 B2Semperfire, LLC
- Remote monitoring of water distribution system3 Mar 2026US 12,564,748 B2Clow Valve Co. division of McWane, Inc.
- System with sensor and actuated purge valve23 Apr 2026US 2026/0110157 A1
- Hydrant nozzle cap spacer12 Mar 2026US 2026/0071413 A1Mueller International, LLC
- Fire Hydrant Repair Tool, And Systems And Methods Of Using Same5 Mar 2026US 2026/0061241 A1Washington Suburban Sanitary Commission
- Expanding systems for break check water dampening26 Feb 2026US 2026/0055824 A1Mueller International, LLC
- Valve assembly with air release and sensor19 Feb 2026US 2026/0049464 A1Mueller International, LLC
Most cited
By later US patents
- Fire hydrant anti-tamper device142US 6,816,072 B22004
- Infrastructure monitoring devices, systems, and methods93US 8,931,505 B22015
- Fire hydrant leak detector87US 9,291,520 B2Mueller International, LLC · 2016
- Nozzle cap multi-band antenna assembly79US 10,305,178 B2Mueller International, LLC · 2019
- Smart fire hydrants73US 8,657,021 B12014