B01D 37/03
Processes of filtration: using flocculating agents
Official title: using flocculating agents
B01D37/03 (Processes of filtration: using flocculating agents) appears on 224 US grants and 60 published applications in this corpus.
Search patents in B01D- Granted patents
- 224
- Published applications
- 60
- Assignees
- 154
- Inventors
- 414
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 9 | 0 |
| 1980 | 13 | 0 |
| 1981 | 11 | 0 |
| 1982 | 4 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 13 | 0 |
| 1990 | 7 | 0 |
| 1991 | 13 | 0 |
| 1992 | 16 | 0 |
| 1993 | 12 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 2 |
| 2002 | 0 | 1 |
| 2003 | 4 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 4 |
| 2014 | 1 | 4 |
| 2015 | 3 | 2 |
| 2016 | 1 | 5 |
| 2017 | 2 | 7 |
| 2018 | 2 | 2 |
| 2019 | 2 | 3 |
| 2020 | 5 | 1 |
| 2021 | 4 | 2 |
| 2022 | 2 | 8 |
| 2023 | 2 | 2 |
| 2024 | 1 | 3 |
| 2025 | 3 | 3 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for extracting microvesicles from biological sample17 Feb 2026US 12,551,828 B2Korea University Research and Business Foundation
- Treated floc curtains27 Jan 2026US 12,533,613 B2Clearflow Group Inc.
- Mechanical demoisturizing of partially-decomposed organic material13 Jan 2026US 12,521,651 B2American Peat Technology, LLC
- Production of strontium sulfate and strontium carbonate from brines30 Sep 2025US 12,428,308 B2
- Tailing pond remediation25 Feb 2025US 12,233,365 B2Heat IP Holdco, LLC
- Slurry treatment apparatus12 Mar 2026US 2026/0070830 A1Vietti Slurrytec (Pty) Ltd
- Lubricant for filtration containing onium ions24 Jul 2025US 2025/0235805 A1Tokuyama Corporation
- Compositions and methods for treating and reclaiming paint flush waste5 Jun 2025US 2025/0178942 A1Heritage Research Group
- Device for providing and treating a liquid, filter bag, method for producing a filter bag and use6 Mar 2025US 2025/0073619 A1Hilti Aktiengesellschaft
- Mechanical demoisturizing of partially-decomposed organic material21 Mar 2024US 2024/0091678 A1American Peat Technology, LLC
Most cited
By later US patents
- Apparatus and method for separation of solids from liquid82US 5,814,230 A1998
- Purification of liquids with treated filter aid material and active particulate material71US 4,238,334 AEcodyne Corporation · 1980
- Process for the decontamination of oil-contaminated particulate solids66US 4,599,117 A1986
- Water clarifying apparatus57US 4,931,175 ALenox Institute for Research, Inc. · 1990
- Apparatus and method for clarification of water using combined flotation and filtration processes50US 4,377,485 ALenox Institute for Research, Inc. · 1983