E03F 11/00
Cesspools
Official title: Cesspools (emptying cesspools E03F7/00; features relating to treatment of sewage C02F)
E03F11/00 (Cesspools) appears on 151 US grants and 96 published applications in this corpus.
Search patents in E03F- Granted patents
- 151
- Published applications
- 96
- Assignees
- 81
- Inventors
- 211
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 4 |
| 2005 | 3 | 7 |
| 2006 | 3 | 6 |
| 2007 | 3 | 9 |
| 2008 | 6 | 7 |
| 2009 | 6 | 5 |
| 2010 | 4 | 5 |
| 2011 | 3 | 3 |
| 2012 | 6 | 2 |
| 2013 | 4 | 4 |
| 2014 | 4 | 3 |
| 2015 | 2 | 3 |
| 2016 | 5 | 8 |
| 2017 | 3 | 2 |
| 2018 | 3 | 4 |
| 2019 | 7 | 2 |
| 2020 | 2 | 5 |
| 2021 | 3 | 4 |
| 2022 | 2 | 2 |
| 2023 | 3 | 1 |
| 2024 | 4 | 4 |
| 2025 | 2 | 1 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multiple chamber septic tank with a plurality of large and small access ports25 Aug 2026US 12,715,798 B2KleanTu LLC
- Low profile asymmetric leaching chamber for onsite wastewater management system24 Mar 2026US 12,584,305 B2Prinsco, Inc.
- Riser and ingress device assembly for septic tank system13 Jan 2026US 12,523,321 B2Aero-Stream, LLC
- Insulation disc for septic tank lid23 Sep 2025US 12,421,709 B2
- Septic system including control and monitoring system5 Aug 2025US 12,378,758 B2Alderon Industries, LLC
- Low profile asymmetric leaching chamber for onsite wastewater management system5 Feb 2026US 2026/0035903 A1Prinsco, Inc.
- Riser and ingress device assembly for septic tank system15 Jan 2026US 2026/0016105 A1Aero-Stream, LLC
- Tank Wall Connection27 Feb 2025US 2025/0066114 A1Dutchland, Inc.
- Insulation disc for septic tank lid24 Oct 2024US 2024/0352722 A1
- Multiple Chamber Septic Tank with a Plurality of Large and Small Access Ports22 Aug 2024US 2024/0279095 A1KleanTu LLC
Most cited
By later US patents
- Septic system55US 4,824,287 A1989
- Septic tank for alternative sewer systems50US 4,709,723 AHancor, Inc. · 1987
- Separator tank50US 6,068,765 AStormceptor Corporation · 2000
- Pipe seal assembly for poured concrete on-site waste disposal system components37US 4,951,914 ATuf-Tite, Inc. · 1990
- Multi-chambered septic tank with elongated partition crossover conduits36US 4,997,562 A1991