C02F 3/046
Soil filtration
Official title: {Soil filtration}
C02F3/046 (Soil filtration) appears on 175 US grants and 123 published applications in this corpus.
Search patents in C02F- Granted patents
- 175
- Published applications
- 123
- Assignees
- 97
- Inventors
- 292
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 3 |
| 2002 | 2 | 2 |
| 2003 | 3 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 4 |
| 2007 | 2 | 0 |
| 2008 | 4 | 2 |
| 2009 | 1 | 6 |
| 2010 | 2 | 4 |
| 2011 | 4 | 4 |
| 2012 | 5 | 5 |
| 2013 | 2 | 5 |
| 2014 | 3 | 4 |
| 2015 | 3 | 3 |
| 2016 | 5 | 9 |
| 2017 | 8 | 5 |
| 2018 | 6 | 7 |
| 2019 | 10 | 7 |
| 2020 | 6 | 8 |
| 2021 | 13 | 14 |
| 2022 | 6 | 6 |
| 2023 | 5 | 7 |
| 2024 | 7 | 8 |
| 2025 | 5 | 2 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- MABR-based method for treating rare earth mine tailwater12 May 2026US 12,623,940 B2Guangdong University of Technology
- Biofilter block and use thereof for wastewater treatment10 Mar 2026US 12,570,558 B2Premier Tech Eau Et Environnement LtéE
- Systems and methods for stormwater management9 Dec 2025US 12,492,130 B2Advanced Drainage Systems, Inc.
- Stormwater biofiltration system and method15 Jul 2025US 12,359,419 B2StormTree Inc.
- Vegetation-based remediation systems, remediation straw and cartridge apparatuses for groundwater treatment, and methods for installation of vegetation-based remediation systems17 Sep 2026US 2026/0274724 A1Applied Natural Sciences, Inc.
- Systems and Methods for Stormwater Treatment6 Aug 2026US 2026/0225917 A1Geostorage Corporation
- Soil absorption module for effluent dispersal system23 Apr 2026US 2026/0109630 A1
- Biofilter block and use thereof for wastewater treatment21 Aug 2025US 2025/0263320 A1Premier Tech Eau Et Environnement LtéE
- Fluid Drainage System With Sand-Mimicking Fluid Retentive Wrapping13 Mar 2025US 2025/0083981 A1Eljen Corporation
Most cited
By later US patents
- Method and apparatus for treating hydrocarbon and halogenated hydrocarbon contaminated ground and ground water128US 4,401,569 AGroundwater Decontamination Systems, Inc. · 1983
- Method and apparatus for treating stormwater runoff122US 6,277,274 B12001
- Method and apparatus for treating storm water107US 5,322,629 AW & H Pacific Inc. · 1994
- Gas production by accelerated in situ bioleaching of landfills80US 4,323,367 AInstitute of Gas Technology · 1982
- Method for treating water69US 4,839,051 ARyoko Co., Ltd. · 1989