B01D 2321/30
Mechanical cleaning
Official title: Mechanical cleaning, e.g. with brushes or scrapers
B01D2321/30 (Mechanical cleaning) appears on 59 US grants and 58 published applications in this corpus.
Search patents in B01D- Granted patents
- 59
- Published applications
- 58
- Assignees
- 52
- Inventors
- 137
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 1 | 3 |
| 2012 | 2 | 3 |
| 2013 | 0 | 3 |
| 2014 | 1 | 1 |
| 2015 | 4 | 6 |
| 2016 | 3 | 3 |
| 2017 | 2 | 11 |
| 2018 | 4 | 4 |
| 2019 | 5 | 4 |
| 2020 | 5 | 2 |
| 2021 | 2 | 3 |
| 2022 | 1 | 5 |
| 2023 | 4 | 0 |
| 2024 | 2 | 1 |
| 2025 | 2 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Biochar-anaerobic membrane biological treatment system and process27 Jan 2026US 12,533,637 B2Xi'an University of Architecture and Technology
- Filter screen11 Feb 2025US 12,220,669 B2Accelerated Filtration, Inc.
- Isolation device and isolation method14 Jan 2025US 12,196,657 B2Shenzhen Huixin Life Technologies Co., Ltd
- Systems and methods for activating and dewatering sludge using acoustic pressure shock waves8 Oct 2024US 12,110,238 B2Sanuwave, Inc.
- Method and device for removing particles from waste water27 Aug 2024US 12,070,724 B2Planet Care, Resitve Za Okolje D.O.O.
- Scrubber Device for Scrubbing Hydrocarbon Gas Stream Including Modified Sparger Ducts27 Nov 2025US 2025/0360449 A1
- Filter screen8 May 2025US 2025/0144572 A1Accelerated Filtration, Inc.
- Removing bivalent ions from produced water27 Mar 2025US 2025/0100907 A1Saudi Arabian Oil Company
- Method for operating separation membrane, separation membrane device, and program for determining operating conditions of separation membrane27 Feb 2025US 2025/0065272 A1Toray Industries, Inc.
- Biochar-anaerobic membrane biological treatment system and process4 Jul 2024US 2024/0216867 A1Xi'an University of Architecture and Technology
Most cited
By later US patents
- Apparatus for treating activated sludge and method of cleaning it143US 5,192,456 AKubota Corporation · 1993
- Catalytic filtration device and method75US 5,221,484 ACeraMem Separations Limited Partnership · 1993
- High purity water production using ion exchange74US 6,267,891 B1Zenon Environmental Inc. · 2001
- High purity water production56US 6,258,278 B1Zenon Environmental Inc. · 2001
- Process for purifying water using fine floc and microfiltration in a single tank reactor54US 6,027,649 AZenon Environmental Inc. · 2000