C02F 3/288
Comprising septic tanks combined with a filter
Official title: {comprising septic tanks combined with a filter}
C02F3/288 (Comprising septic tanks combined with a filter) appears on 146 US grants and 117 published applications in this corpus.
Search patents in C02F- Granted patents
- 146
- Published applications
- 117
- Assignees
- 56
- Inventors
- 176
- Latest grant
- 27 Jan 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 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 9 | 1 |
| 2002 | 7 | 10 |
| 2003 | 8 | 7 |
| 2004 | 4 | 7 |
| 2005 | 6 | 3 |
| 2006 | 2 | 4 |
| 2007 | 6 | 8 |
| 2008 | 4 | 7 |
| 2009 | 5 | 5 |
| 2010 | 3 | 7 |
| 2011 | 2 | 3 |
| 2012 | 5 | 7 |
| 2013 | 4 | 1 |
| 2014 | 7 | 6 |
| 2015 | 2 | 3 |
| 2016 | 4 | 5 |
| 2017 | 2 | 3 |
| 2018 | 3 | 4 |
| 2019 | 5 | 2 |
| 2020 | 3 | 2 |
| 2021 | 5 | 6 |
| 2022 | 1 | 2 |
| 2023 | 3 | 4 |
| 2024 | 4 | 6 |
| 2025 | 2 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tank configuration with enhanced denitrification27 Jan 2026US 12,534,392 B2KleanTu LLC
- Wastewater treatment system for improved primary treatment and volatile fatty acid generation6 May 2025US 12,291,473 B2Inspired Water Technology Inc.
- Wastewater treatment system1 Apr 2025US 12,264,091 B1Holm Environmental Energy Resources LLC
- Septic tank filter system31 Dec 2024US 12,180,090 B2
- Water aeration and treatment method19 Nov 2024US 12,145,874 B1Imam Abdulrahman Bin Faisal University
- Tank configuration with enhanced denitrification7 May 2026US 2026/0125302 A1KleanTu LLC
- Soil absorption module for effluent dispersal system23 Apr 2026US 2026/0109630 A1
- Septic tank filter system10 Apr 2025US 2025/0115500 A1
- Embedded infiltration device3 Apr 2025US 2025/0109584 A1
- Water aeration and treatment method14 Nov 2024US 2024/0375982 A1Imam Abdulrahman Bin Faisal University
Most cited
By later US patents
- Anaerobic/aerobic filter plant82US 4,895,645 A1990
- Airlift pump apparatus and method78US 6,162,020 ANCA2BioProcess, Inc. · 2000
- Septic tank filters66US 4,710,295 A1987
- Process and apparatus for a biological reactor to purify water54US 4,997,568 A1991
- Wastewater treatment method and apparatus50US 5,707,513 A1998