C02F 3/087
Floating beds with contact bodies having a lower density than water
Official title: {Floating beds with contact bodies having a lower density than water}
C02F3/087 (Floating beds with contact bodies having a lower density than water) appears on 80 US grants and 59 published applications in this corpus.
Search patents in C02F- Granted patents
- 80
- Published applications
- 59
- Assignees
- 50
- Inventors
- 173
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 4 |
| 2003 | 4 | 2 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 4 |
| 2008 | 2 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 6 |
| 2012 | 3 | 0 |
| 2013 | 3 | 3 |
| 2014 | 1 | 3 |
| 2015 | 3 | 2 |
| 2016 | 2 | 6 |
| 2017 | 2 | 3 |
| 2018 | 1 | 2 |
| 2019 | 4 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 5 |
| 2024 | 0 | 1 |
| 2025 | 1 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Wastewater filtering method and apparatus comprising filter media of different sizes9 Sep 2025US 12,410,080 B2Tomorrow Water
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- Water purification system25 Jun 2026US 2026/0176159 A1Kyoraku Co., Ltd.
- Wastewater filtering method and apparatus comprising filter media of different sizes30 Oct 2025US 2025/0333341 A1Bkt Co., Ltd.
- Wastewater filtering method and apparatus comprising filter media of different sizes30 Oct 2025US 2025/0333342 A1Bkt Co., Ltd.
- Aerated Biological Filtration Process for Water Treatment with a View to Reducing the Nitrogen Content (NGL) of Said Water with Reduction of Carbon-Source and Aeration Requirements28 Mar 2024US 2024/0101454 A1Veolia Water Solutions & Technologies Support
- Vacuum air lift systems including a fluidic oscillator7 Dec 2023US 2023/0391637 A1Searen, LLC
Most cited
By later US patents
- Method and apparatus for purifying waste water71US 5,019,268 AOTV (Omnium de Traitements et de Valorisation) · 1991
- Process for chemical modification of reactants by microbes63US 5,747,311 AMicrogen PLC · 1998
- Nitrification treatment of wastewater57US 4,415,454 ALinde Aktiengesellschaft · 1983
- Process and apparatus for the biological purification of wastewater52US 4,566,971 ALinde Aktiengesellschaft · 1986
- Secondary sewage treatment system44US 5,202,027 A1993