B01D 21/0033
Vertical, perforated partition walls
Official title: {Vertical, perforated partition walls (B01D21/2422 takes precedence)}
B01D21/0033 (Vertical, perforated partition walls) appears on 60 US grants and 54 published applications in this corpus.
Search patents in B01D- Granted patents
- 60
- Published applications
- 54
- Assignees
- 46
- Inventors
- 101
- Latest grant
- 10 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 7 |
| 2004 | 1 | 0 |
| 2005 | 4 | 0 |
| 2006 | 2 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 4 |
| 2014 | 3 | 6 |
| 2015 | 1 | 5 |
| 2016 | 6 | 4 |
| 2017 | 2 | 4 |
| 2018 | 2 | 0 |
| 2019 | 5 | 5 |
| 2020 | 3 | 5 |
| 2021 | 4 | 3 |
| 2022 | 4 | 3 |
| 2023 | 5 | 1 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Passive membrane filtration system with pre-treatment10 Dec 2024US 12,161,954 B2Bio Clean Environmental Services, Inc.
- Partitioned water treatment systems with vertical filtration units3 Sep 2024US 12,076,665 B2Bio Clean Environmental Services, Inc.
- Water quality unit for flow-through manhole5 Dec 2023US 11,834,821 B1S & M Precast, Inc.
- Systems and processes for removing pollutants from water, reducing greenhouse gas emissions, and reducing aquatic ecosystem destruction27 Jun 2023US 11,685,682 B1
- Grease interceptor inlet chamber20 Jun 2023US 11,679,342 B2Schier Products Company
- Improved Sedimentation Tower4 Sep 2025US 2025/0276259 A1Wyma Engineering (Nz) Limited
- Method of cyclonic separation of a flow of multi-phase fluid31 Aug 2023US 2023/0271110 A1EnXL LLC
- Method of Separating a First Contaminant from a Feed Stream and Reactor System for Carrying Out the Method15 Dec 2022US 2022/0396680 A1Ioniqa Technologies B.V.
- Partitioned water treatment systems with vertical filtration units16 Jun 2022US 2022/0184531 A1Bio Clean Environmental Services, Inc.
- Grease interceptor inlet chamber14 Apr 2022US 2022/0111311 A1Schier Products Company
Most cited
By later US patents
- Separation apparatus and method71US 5,840,198 AInternational Fluid Separation Pty Ltd · 1998
- Reserve pit waste treatment system40US 4,526,687 AWater & Industrial Waste Laboratories, Inc. · 1985
- Method for treatment of contaminated water35US 5,741,426 A1998
- Water pollution trap with water flow baffles28US 7,011,743 B22006
- Water pollution trap with clay collector18US 6,936,163 B22005