B03D 1/1437
Using electroflotation
Official title: {using electroflotation (waste water treatment using electroflotation C02F1/465)}
B03D1/1437 (Using electroflotation) appears on 36 US grants and 18 published applications in this corpus.
Search patents in B03D- Granted patents
- 36
- Published applications
- 18
- Assignees
- 30
- Inventors
- 67
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 3 |
| 2020 | 2 | 1 |
| 2021 | 1 | 4 |
| 2022 | 4 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and arrangement for process water treatment17 Feb 2026US 12,551,903 B2Metso Finland Oy
- Point-of-care electroflotation of dispersed, low tolerance pathogens13 May 2025US 12,296,349 B2University of Hawaii
- Method for purifying water23 Aug 2022US 11,420,886 B2
- Adjustable particle separator system and method of using same9 Aug 2022US 11,406,918 B2University of Houston System
- Water treatment apparatus using lamella structure22 Feb 2022US 11,254,591 B2Korea Testing Laboratory
- Water treatment system10 Jul 2025US 2025/0223197 A1SK Innovation Co., Ltd.
- Voltage regulated water purification methods and systems16 Jun 2022US 2022/0185707 A1
- Method and arrangement for process water treatment9 Dec 2021US 2021/0379605 A1Metso Outotec Finland Oy
- Adjustable particle separator system and method of using same12 Aug 2021US 2021/0245075 A1University of Houston System
- Point-of-Care Electroflotation of Dispersed, Low Tolerance Pathogens5 Aug 2021US 2021/0238658 A1University of Hawaii
Most cited
By later US patents
- Method and apparatus for removing impurities from liquids41US 4,623,436 AShowakoki Co., Ltd. · 1986
- Combined coarse and fine bubble separation system38US 5,275,732 AInternational Environmental Systems, Inc., USA · 1994
- Process and apparatus for processing industrial waste water by electrolysis34US 5,549,812 AWT Wassertechnologie GmbH · 1996
- Flotation apparatus and process utilizing a novel mixing and floc dispersion means32US 4,490,259 AInternational Resources Management, Inc. · 1984
- Electrolytic flotation apparatus20US 4,101,409 ASimon-Hartley Limited · 1978