E03B 9/02
Hydrants
Official title: Hydrants; Arrangements of valves therein; Keys for hydrants
E03B9/02 (Hydrants) appears on 802 US grants and 559 published applications in this corpus.
Search patents in E03B- Granted patents
- 802
- Published applications
- 559
- Assignees
- 226
- Inventors
- 945
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 8 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 10 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 16 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 13 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 12 | 0 |
| 1995 | 11 | 0 |
| 1996 | 10 | 0 |
| 1997 | 17 | 0 |
| 1998 | 20 | 0 |
| 1999 | 16 | 0 |
| 2000 | 20 | 0 |
| 2001 | 8 | 3 |
| 2002 | 9 | 3 |
| 2003 | 7 | 7 |
| 2004 | 15 | 9 |
| 2005 | 17 | 11 |
| 2006 | 14 | 20 |
| 2007 | 9 | 19 |
| 2008 | 7 | 17 |
| 2009 | 15 | 16 |
| 2010 | 11 | 12 |
| 2011 | 9 | 13 |
| 2012 | 7 | 12 |
| 2013 | 11 | 22 |
| 2014 | 15 | 20 |
| 2015 | 25 | 29 |
| 2016 | 32 | 28 |
| 2017 | 29 | 31 |
| 2018 | 21 | 37 |
| 2019 | 32 | 34 |
| 2020 | 40 | 54 |
| 2021 | 41 | 29 |
| 2022 | 38 | 38 |
| 2023 | 54 | 33 |
| 2024 | 21 | 31 |
| 2025 | 24 | 15 |
| 2026 | 19 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E03B 9/04Column hydrants283
- E03B 9/025Taps specially designed for outdoor use155
- E03B 9/08Underground hydrants128
- E03B 9/14Draining devices for hydrants109
- E03B 9/20Pillar fountains or like apparatus for dispensing drinking water80
- E03B 9/16Devices for retaining foreign matter27
- E03B 9/18Cleaning tools for hydrants13
- E03B 2009/022Hydrants with a tubular valve seatIndexing code4
Recent patents
- Fire hydrant valve usable alone quickly in case of fire18 Aug 2026US 12,709,878 B2
- 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
- Automated utility dispensing system for transient accommodations4 Aug 2026US 12,700,048 B1
- Outer housing with a sidewall shell and cap attached thereto for a pressure monitoring system26 May 2026US 12,638,355 B2
- Water dispenser riser assembly and system1 Oct 2026US 2026/0297912 A1Brio Water Technology, Inc.
- Retrofitting method for a compact water bottle filling station10 Sep 2026US 2026/0265037 A1Acorn Engineering Company
- Smart hydrostations23 Jul 2026US 2026/0210093 A1The Global H20 Initiative, PBC
- Freeze Resistant Wall Hydrant9 Jul 2026US 2026/0193871 A1
- Auto-draining diverter valve4 Jun 2026US 2026/0153158 A1Geberit International AG
Most cited
By later US patents
- Fire hydrant anti-tamper device142US 6,816,072 B22004
- Sensor operated water flow control123US 5,033,508 ACoyne & Delany Co. · 1991
- Hydrant variable riser and restraint104US 4,741,356 AAssured Flow Sales, Inc. · 1988
- Smart monitor for fire hydrants104US 7,980,317 B1F.C. Patents, LLC · 2011
- Infrastructure monitoring devices, systems, and methods93US 8,931,505 B22015