B01D 21/183
With multiple scraping mechanisms
Official title: {with multiple scraping mechanisms}
B01D21/183 (With multiple scraping mechanisms) appears on 42 US grants and 12 published applications in this corpus.
Search patents in B01D- Granted patents
- 42
- Published applications
- 12
- Assignees
- 24
- Inventors
- 55
- Latest grant
- 27 Jun 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 3 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Systems and processes for removing pollutants from water, reducing greenhouse gas emissions, and reducing aquatic ecosystem destruction27 Jun 2023US 11,685,682 B1
- Clarifier with independent sump scraper drive16 May 2023US 11,648,493 B2Kadant Black Clawson LLC
- Clarifier with independent sump scraper drive19 Oct 2021US 11,148,074 B2Kadant Black Clawson LLC
- Clog-resistant inlet for a conduit of a water treatment system31 Aug 2021US 11,103,810 B2Meurer Research, Inc.
- Clog-resistant inlet for a conduit of a water treatment system9 Jun 2020US 10,675,562 B2Meurer Research, Inc.
- Clarifier with independent sump scraper drive3 Mar 2022US 2022/0062795 A1Kadant Black Clawson LLC
- Clog-resistant inlet for a conduit of a water treatment system24 Sep 2020US 2020/0298145 A1Meurer Research, Inc.
- Improved clarifier with independent sump scraper drive4 Jun 2020US 2020/0171412 A1Kadant Black Clawson LLC
- Clog-resistant inlet for a conduit of a water treatment system2 Apr 2020US 2020/0101402 A1Meurer Research, Inc.
- Separation apparatus8 Feb 2018US 2018/0036662 A1EMS Industrial Holdings Limited
Most cited
By later US patents
- Apparatus and method for separation of solids from liquid82US 5,814,230 A1998
- Wastewater treatment system and method32US 5,637,221 A1997
- Sludge collection apparatus and method30US 5,435,924 A1995
- Wastewater treatment system and method25US 5,540,836 A1996
- Apparatus for separation17US 6,096,201 ASpirac Engineering AB · 2000