C02F 3/082
Rotating biological contactors
Official title: {Rotating biological contactors}
C02F3/082 (Rotating biological contactors) appears on 185 US grants and 104 published applications in this corpus.
Search patents in C02F- Granted patents
- 185
- Published applications
- 104
- Assignees
- 90
- Inventors
- 284
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 9 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 1 | 0 |
| 2005 | 2 | 5 |
| 2006 | 2 | 1 |
| 2007 | 3 | 4 |
| 2008 | 2 | 7 |
| 2009 | 3 | 6 |
| 2010 | 5 | 13 |
| 2011 | 5 | 5 |
| 2012 | 3 | 4 |
| 2013 | 8 | 5 |
| 2014 | 8 | 6 |
| 2015 | 4 | 6 |
| 2016 | 0 | 4 |
| 2017 | 5 | 5 |
| 2018 | 1 | 2 |
| 2019 | 2 | 4 |
| 2020 | 5 | 4 |
| 2021 | 2 | 7 |
| 2022 | 4 | 7 |
| 2023 | 2 | 4 |
| 2024 | 4 | 0 |
| 2025 | 0 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and installation for controlled microbiome shift for biomass densification in a biological treatment of a raw influent8 Sep 2026US 12,729,143 B2Newport Corporation
- Rotating biological contactor media and shaft/load transfer mechanism7 Apr 2026US 12,595,199 B2
- Wastewater treatment device and wastewater treatment method13 Aug 2024US 12,060,288 B2IHI Corporation
- Aquarium filter arrangement including pre-filter member and methods23 Jul 2024US 12,041,917 B2Spectrum Brands, Inc.
- Method of facilitating or inhibiting growth of specific microorganisms20 Feb 2024US 11,905,195 B2Gross-Wen Te nologies, Inc.
- Onsite sustainable sanitation devices for water and nutrient recycling and methods of use thereof20 Aug 2026US 2026/0242264 A1
- Non-woven mat9 Apr 2026US 2026/0098362 A1
- Submersible Bucket Filter System for Recirculating Deep Water Culture Systems6 Mar 2025US 2025/0074805 A1
- Method and installation for controlled microbiome shift for biomass densification in a biological treatment of a raw influent16 Nov 2023US 2023/0365446 A1Newport Corporation
- Side Stream Treatment for Overflow16 Nov 2023US 2023/0365447 A1Evoqua Water Technologies LLC
Most cited
By later US patents
- Waste water treating process85US 5,098,567 ANishihara Environmental Sanitation Research Corporation Limited · 1992
- Water recycling system63US 4,246,101 APure Cycle Corporation · 1981
- Centrifugal rotating disc assembly for biological waste water treatment apparatus56US 4,268,385 ADengyosha Engineering Co., Inc. · 1981
- Biological treatment of wastewater53US 4,663,044 ATransfield, Inc. · 1987
- Installation for the mechanical-biological purification of waste water50US 4,090,965 AMecafina S.A. · 1978