C02F 2103/002
Grey water
Official title: {Grey water, e.g. from clothes washers, showers or dishwashers}
C02F2103/002 (Grey water) appears on 458 US grants and 605 published applications in this corpus.
Search patents in C02F- Granted patents
- 458
- Published applications
- 605
- Assignees
- 331
- Inventors
- 1,185
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 1 |
| 2002 | 9 | 11 |
| 2003 | 6 | 10 |
| 2004 | 12 | 13 |
| 2005 | 9 | 16 |
| 2006 | 9 | 12 |
| 2007 | 13 | 18 |
| 2008 | 9 | 18 |
| 2009 | 9 | 16 |
| 2010 | 11 | 25 |
| 2011 | 9 | 16 |
| 2012 | 9 | 22 |
| 2013 | 11 | 18 |
| 2014 | 10 | 23 |
| 2015 | 4 | 32 |
| 2016 | 13 | 40 |
| 2017 | 25 | 35 |
| 2018 | 24 | 32 |
| 2019 | 28 | 24 |
| 2020 | 37 | 34 |
| 2021 | 31 | 37 |
| 2022 | 18 | 38 |
| 2023 | 27 | 35 |
| 2024 | 33 | 33 |
| 2025 | 27 | 25 |
| 2026 | 14 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fluidic device and method for controlling fluidic device18 Aug 2026US 12,708,866 B2Seiko Epson Corporation
- Fluid recycling unit for aircraft11 Aug 2026US 12,703,648 B2MAG Aerospace Industries, LLC
- Water treatment system and water treatment method28 Jul 2026US 12,692,176 B2Wota Corp.
- Online biological monitoring in decentralized non-potable water system23 Jun 2026US 12,662,406 B2Natural Systems Utilities, LLC
- Closed-loop water system with integrated atmospheric water generation and greywater recycling17 Sep 2026US 2026/0274729 A1
- Recycled water system17 Sep 2026US 2026/0275688 A1Kohler Co.
- Septic treatment system10 Sep 2026US 2026/0265102 A1Iflo LLC
- Filter drainage27 Aug 2026US 2026/0250896 A1Inheriting Earth Limited
- Vermifilter systems and methods for wastewater filtration20 Aug 2026US 2026/0242262 A1TBF-Solutions Inc.
Most cited
By later US patents
- Apparatus for treating activated sludge and method of cleaning it143US 5,192,456 AKubota Corporation · 1993
- Process and system for recycling and reusing gray water104US 5,868,937 AMainstream Engineering Corporation · 1999
- Shipboard wastewater treatment system104US 6,361,695 B1Zenon Environmental Inc. · 2002
- Modular shipboard membrane bioreactor system for combined wastewater streams98US 5,254,253 AZenon Environmental Inc. · 1993
- Water reuse system89US 4,162,218 A1979