E03D 5/006
Constructional details of cisterns for using greywater
Official title: {Constructional details of cisterns for using greywater}
E03D5/006 (Constructional details of cisterns for using greywater) appears on 42 US grants and 35 published applications in this corpus.
Search patents in E03D- Granted patents
- 42
- Published applications
- 35
- Assignees
- 12
- Inventors
- 77
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 2 | 4 |
| 2016 | 2 | 2 |
| 2017 | 4 | 4 |
| 2018 | 2 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 3 |
| 2021 | 2 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 1 |
| 2024 | 2 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Grey water rinse toilet18 Aug 2026US 12,709,884 B2Kohler Co.
- Grey water toilet and flushing method30 Sep 2025US 12,428,828 B2Kohler Co.
- Water reuse device for reusing water used in the bathroom as water for toilets with flush valves9 Apr 2024US 11,952,765 B2
- Grey water toilet and flushing method30 Jan 2024US 11,885,111 B2Kohler Co.
- Grey water toilet and flushing method9 Nov 2021US 11,168,471 B2Kohler 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
- Separation toilet for a vehicle1 Jan 2026US 2026/0001497 A1Siemens Mobility GmbH
- Water Recycling System For Toilets16 Jan 2025US 2025/0019951 A1
- System and method for utilizing gray water to flush a toilet5 Sep 2024US 2024/0295109 A1MJ Stewart Investments, LLC
- Grey water toilet and flushing method18 Apr 2024US 2024/0125103 A1Kohler Co.
Most cited
By later US patents
- 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
- Gray water toilet system25US 5,201,082 A1993