C02F 2203/00
Apparatus and plants for the biological treatment of water, waste water or
Official title: Apparatus and plants for the biological treatment of water, waste water or sewage
C02F2203/00 (Apparatus and plants for the biological treatment of water, waste water or) appears on 655 US grants and 928 published applications in this corpus.
Search patents in C02F- Granted patents
- 655
- Published applications
- 928
- Assignees
- 555
- Inventors
- 1,935
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 6 |
| 2003 | 3 | 3 |
| 2004 | 4 | 4 |
| 2005 | 4 | 6 |
| 2006 | 8 | 6 |
| 2007 | 8 | 9 |
| 2008 | 4 | 7 |
| 2009 | 6 | 7 |
| 2010 | 7 | 15 |
| 2011 | 9 | 24 |
| 2012 | 11 | 31 |
| 2013 | 24 | 35 |
| 2014 | 20 | 42 |
| 2015 | 18 | 84 |
| 2016 | 30 | 61 |
| 2017 | 56 | 46 |
| 2018 | 55 | 66 |
| 2019 | 45 | 56 |
| 2020 | 52 | 68 |
| 2021 | 44 | 69 |
| 2022 | 56 | 60 |
| 2023 | 50 | 62 |
| 2024 | 53 | 72 |
| 2025 | 39 | 52 |
| 2026 | 30 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for leachate biodegradation through aquatic microorganism digestion6 Oct 2026US 12,753,098 B1
- System and method for wastewater treatment control through microorganism settling optimization6 Oct 2026US 12,753,099 B1
- Method and system for continuous-flow aerobic granular sludge process with improved two-stage sedimentation29 Sep 2026US 12,747,174 B2Passavant Roediger Water Technologies (Hangzhou) Co., Ltd.
- Electrochemical nitrogen and phosphorus removal device and method29 Sep 2026US 12,747,176 B2Beijing Drainage Group Co., Ltd
- Efficient nitrogen and phosphorus removal process system for mariculture tail water treatment15 Sep 2026US 12,735,339 B2Tianjin Research Institute for Water Transport Engineering, M.O.T.
- Operation method of water treatment apparatus and water treatment apparatus8 Oct 2026US 2026/0308031 A1Kubota Corporation
- Water treatment method and water treatment apparatus1 Oct 2026US 2026/0296934 A1Organo Corporation
- Fixed film bioreactor for purification of water and associated methods1 Oct 2026US 2026/0296937 A1WesTech Engineering, Inc.
- Controlled flow baffles for a treatment tank1 Oct 2026US 2026/0296938 A1Parkson Corporation
- Systems for catalytically removing per- and polyfluoroalkyl substances from a fluid and related methods1 Oct 2026US 2026/0296939 A1Arizona Board of Regents on behalf of Arizona State University
Most cited
By later US patents
- Apparatus for oxygenating wastewater108US 7,008,535 B1DynamOx, Inc. · 2006
- Controlling wastewater treatment by monitoring oxygen utilization rates107US 5,989,428 A1999
- Utilities container82US 6,393,775 B12002
- Method for oxygenating wastewater73US 7,294,278 B2DynamOx, Inc. · 2007
- Utilities container47US 6,688,048 B22004