B01D 2221/12
Separation devices for treating rain or storm water
B01D2221/12 (Separation devices for treating rain or storm water) appears on 144 US grants and 137 published applications in this corpus.
Search patents in B01D- Granted patents
- 144
- Published applications
- 137
- Assignees
- 79
- Inventors
- 246
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 3 |
| 2003 | 4 | 8 |
| 2004 | 6 | 7 |
| 2005 | 8 | 10 |
| 2006 | 8 | 3 |
| 2007 | 3 | 7 |
| 2008 | 5 | 4 |
| 2009 | 5 | 8 |
| 2010 | 6 | 7 |
| 2011 | 6 | 6 |
| 2012 | 3 | 5 |
| 2013 | 3 | 4 |
| 2014 | 10 | 6 |
| 2015 | 3 | 1 |
| 2016 | 2 | 2 |
| 2017 | 0 | 1 |
| 2018 | 3 | 3 |
| 2019 | 5 | 5 |
| 2020 | 2 | 8 |
| 2021 | 10 | 10 |
| 2022 | 5 | 12 |
| 2023 | 7 | 4 |
| 2024 | 8 | 5 |
| 2025 | 5 | 3 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Grow table cleaning system28 Oct 2025US 12,453,990 B2
- Multi-component weir controlled hydrodynamic separator for stormwater treatment12 Aug 2025US 12,385,243 B2Contech Engineered Solutions LLC
- Systems, methods, and devices for removing contaminants from stormwater8 Jul 2025US 12,350,606 B2StormTrap LLC
- Multi-level outlet weir for enhanced volumetric separation for stormwater treatment3 Jun 2025US 12,319,591 B2Contech Engineered Solutions LLC
- Stormwater skimmer surface drain apparatus4 Mar 2025US 12,239,928 B2J.W. Faircloth & Son, Inc.
- Stormwater management system for urban storage and recovery13 Aug 2026US 2026/0234042 A1
- Storm water oil recovery system23 Jul 2026US 2026/0208072 A1Saudi Arabian Oil Company
- Hydrodynamic separator with alternating baffles23 Jul 2026US 2026/0209084 A1Advanced Drainage Systems, Inc.
- Hydrodynamic separator with alternating baffles23 Jul 2026US 2026/0209085 A1Advanced Drainage Systems, Inc.
- Grow Table Cleaning System29 Jan 2026US 2026/0027249 A1
Most cited
By later US patents
- Method and apparatus for separating floating and non-floating particulate from rainwater drainage71US 5,759,415 AVortechnics, Inc. · 1998
- Catch basin71US 5,849,181 AStormceptor Corporation · 1998
- Stormwater treatment apparatus68US 6,350,374 B1Jensen Enterprises, Inc. · 2002
- Stormwater pollutant separation system and method of stormwater management67US 6,783,683 B2Advanced Drainage Systems, Inc. · 2004
- Oil/grit interceptor65US 6,077,448 AWilkinson Heavy Precast · 2000