C02F 1/5209
Regulation methods for flocculation or precipitation
Official title: {Regulation methods for flocculation or precipitation}
C02F1/5209 (Regulation methods for flocculation or precipitation) appears on 230 US grants and 295 published applications in this corpus.
Search patents in C02F- Granted patents
- 230
- Published applications
- 295
- Assignees
- 214
- Inventors
- 812
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 0 | 3 |
| 2004 | 1 | 3 |
| 2005 | 1 | 2 |
| 2006 | 3 | 3 |
| 2007 | 2 | 3 |
| 2008 | 2 | 4 |
| 2009 | 1 | 2 |
| 2010 | 1 | 6 |
| 2011 | 4 | 9 |
| 2012 | 5 | 7 |
| 2013 | 5 | 14 |
| 2014 | 3 | 13 |
| 2015 | 3 | 14 |
| 2016 | 9 | 13 |
| 2017 | 10 | 23 |
| 2018 | 12 | 14 |
| 2019 | 6 | 19 |
| 2020 | 16 | 23 |
| 2021 | 13 | 12 |
| 2022 | 14 | 23 |
| 2023 | 14 | 22 |
| 2024 | 14 | 21 |
| 2025 | 22 | 22 |
| 2026 | 13 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for treating waste water1 Sep 2026US 12,722,993 B2Samsung E&A Co., Ltd.
- Reactor and process for the precipitation of a solid product25 Aug 2026US 12,714,950 B2Resourseas S.R.L.
- Anoxic bioreactor treatment followed by pH adjusted peroxide/iron treatment for enhanced, efficient selenium removal in wastewaters25 Aug 2026US 12,715,802 B2Evoqua Water Technologies LLC
- Measuring and controlling organic matter in waste water stream18 Aug 2026US 12,709,561 B2Kemira Oyj
- Device and method for treating green liquor11 Aug 2026US 12,703,943 B2Valmet Corporation
- Method for Treating Phosphorus-Containing Wastewater Produced During Preparation of Sulfonamide Compound8 Oct 2026US 2026/0308035 A1Nanhai Beisha Pharmaceutical Co., Ltd.
- Method and system for controlling biofouling with fluorescent biodispersant3 Sep 2026US 2026/0257946 A1Chemtreat, Inc.
- Modulable method for treating an aqueous effluent20 Aug 2026US 2026/0242260 A1Snf Group
- Method for determining flocculation state and method of flocculation treatment13 Aug 2026US 2026/0234036 A1Kurita Water Industries Ltd.
- Flocculation state determination method and flocculation treatment method30 Jul 2026US 2026/0219151 A1Kurita Water Industries Ltd.
Most cited
By later US patents
- System and method for controlling effluents in treatment systems80US 6,408,227 B1University of Iowa Research Foundation · 2002
- Laser-optical arrangement for measuring the degree of dispersion in flowing systems76US 4,752,131 ABASF SE · 1988
- Method and apparatus for controlling the coagulant dosage for water treatment76US 4,855,061 ACPC Engineering Corporation · 1989
- Method and apparatus for water treatment40US 5,766,488 AUnited States Filter Corporation · 1998
- Method of monitoring treating agent residuals in water treatment processes38US 7,910,371 B2Nalco Company · 2011