E03D 5/003
Grey water flushing systems
Official title: {Grey water flushing systems}
E03D5/003 (Grey water flushing systems) appears on 107 US grants and 103 published applications in this corpus.
Search patents in E03D- Granted patents
- 107
- Published applications
- 103
- Assignees
- 34
- Inventors
- 238
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 2 | 6 |
| 2005 | 1 | 0 |
| 2006 | 4 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 5 |
| 2011 | 5 | 3 |
| 2012 | 0 | 4 |
| 2013 | 1 | 4 |
| 2014 | 1 | 7 |
| 2015 | 4 | 8 |
| 2016 | 3 | 5 |
| 2017 | 10 | 9 |
| 2018 | 9 | 3 |
| 2019 | 6 | 7 |
| 2020 | 6 | 7 |
| 2021 | 5 | 3 |
| 2022 | 1 | 7 |
| 2023 | 2 | 4 |
| 2024 | 6 | 5 |
| 2025 | 4 | 5 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Grey water rinse toilet18 Aug 2026US 12,709,884 B2Kohler Co.
- Fluid recycling unit for aircraft11 Aug 2026US 12,703,648 B2MAG Aerospace Industries, LLC
- Energy saving bathroom unit for small spaces24 Mar 2026US 12,584,306 B2Seeley International Pty Ltd
- Environmentally sustainable systems and methods of toilet flushing and blackwater disposal17 Mar 2026US 12,577,769 B2Home Biogas Ltd
- Bathroom system10 Feb 2026US 12,546,094 B2Kohler Co.
- Bathroom system20 Aug 2026US 2026/0243065 A1Kohler Co.
- A water tank arrangement and a method arranged to circulate waste water in response to a predetermined temperature20 Aug 2026US 2026/0243076 A1E3 Equipment AB
- Method and device for removing solids downstream of a siphon of a toilet, and operation of a device of this type29 Jan 2026US 2026/0028809 A1Left AG
- Separation toilet for a vehicle1 Jan 2026US 2026/0001497 A1Siemens Mobility GmbH
- Grey water tank and grey water system7 Aug 2025US 2025/0250783 A1Diehl Aviation Gilching GmbH
Most cited
By later US patents
- Utilities container47US 6,688,048 B22004
- Water recycling device for flush toilet use28US 5,251,346 A1993
- Toilet flushing system that allows use of gray water drained from a sink28US 5,813,047 A1998
- Water saving toilet arrangement26US 3,995,327 A1976
- Water saving toilet and bathroom fixture system26US 5,228,152 A1993