E03C 1/10
Devices for preventing contamination of drinking-water pipes
Official title: Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves (vacuum-breakers in general F16K, F16L)
E03C1/10 (Devices for preventing contamination of drinking-water pipes) appears on 447 US grants and 280 published applications in this corpus.
Search patents in E03C- Granted patents
- 447
- Published applications
- 280
- Assignees
- 227
- Inventors
- 624
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 8 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 11 | 0 |
| 1991 | 11 | 0 |
| 1992 | 12 | 0 |
| 1993 | 17 | 0 |
| 1994 | 12 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 12 | 0 |
| 1998 | 17 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 0 |
| 2002 | 5 | 3 |
| 2003 | 7 | 2 |
| 2004 | 4 | 13 |
| 2005 | 5 | 3 |
| 2006 | 8 | 18 |
| 2007 | 5 | 6 |
| 2008 | 5 | 10 |
| 2009 | 3 | 7 |
| 2010 | 5 | 3 |
| 2011 | 6 | 3 |
| 2012 | 7 | 7 |
| 2013 | 3 | 7 |
| 2014 | 7 | 9 |
| 2015 | 4 | 10 |
| 2016 | 16 | 16 |
| 2017 | 14 | 13 |
| 2018 | 12 | 20 |
| 2019 | 14 | 15 |
| 2020 | 9 | 24 |
| 2021 | 18 | 22 |
| 2022 | 16 | 29 |
| 2023 | 25 | 17 |
| 2024 | 16 | 9 |
| 2025 | 11 | 10 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Plumbing system and method for purifying drinking water16 Jun 2026US 12,655,047 B2BWT Holding GmbH
- Pressure compensation systems, liquid supply systems and methods using the same14 Apr 2026US 12,601,413 B2Watts Regulator Co.
- Modular valve assemblies with optional swing out14 Apr 2026US 12,601,415 B2Australian Valve Group Pty Ltd
- Check cover assemblies for backflow prevention assemblies with integrated test cock protection shroud31 Mar 2026US 12,590,641 B2Watts Regulator Co.
- Method for coating a plumbing component24 Mar 2026US 12,584,206 B2Grohe AG
- Anti-Scald Assembly with Thermal Disinfection28 May 2026US 2026/0146424 A1AS America, Inc.
- Dedicated monitoring and reporting apparatuses for a backflow preventer (bfp) of a reduced pressure zone (rpz) type, a report apparatus for preventing conversion and predictive maintenance, detecting turbidity in the water, and indicating sanitary condition of the bfp based on data analysis of discharged water with continuous monitoring30 Apr 2026US 2026/0117889 A1
- Wireless backflow alert system9 Apr 2026US 2026/0098594 A1Watts Regulator Co.
- Fluid detection systems and methods using the same19 Mar 2026US 2026/0079067 A1
- Remote air gap assemblies4 Dec 2025US 2025/0369213 A1Kohler Co.
Most cited
By later US patents
- Tub transfer-diverter valve with built-in vacuum breaker and back-flow preventer105US 4,953,585 ARubinet Brass Canada Limited · 1990
- Hand spray mounts with integral backflow prevention91US 6,611,971 B1I. W. Industries, Inc. · 2003
- In line back flow preventer82US 4,284,097 AAmtrol Inc. · 1981
- Angle dual check valve77US 5,207,242 AA. Y. McDonald Mgf. Co. · 1993
- Backflow preventer and relief valve assembly72US 3,996,962 ARockwell International Corporation · 1976