C02F 3/1273
Submerged membrane bioreactors
Official title: {Submerged membrane bioreactors}
C02F3/1273 (Submerged membrane bioreactors) appears on 361 US grants and 523 published applications in this corpus.
Search patents in C02F- Granted patents
- 361
- Published applications
- 523
- Assignees
- 226
- Inventors
- 939
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 5 |
| 2002 | 5 | 5 |
| 2003 | 7 | 17 |
| 2004 | 14 | 16 |
| 2005 | 13 | 18 |
| 2006 | 10 | 23 |
| 2007 | 12 | 24 |
| 2008 | 11 | 24 |
| 2009 | 13 | 27 |
| 2010 | 16 | 33 |
| 2011 | 28 | 35 |
| 2012 | 19 | 24 |
| 2013 | 13 | 23 |
| 2014 | 17 | 24 |
| 2015 | 10 | 21 |
| 2016 | 9 | 29 |
| 2017 | 15 | 25 |
| 2018 | 29 | 31 |
| 2019 | 27 | 17 |
| 2020 | 23 | 20 |
| 2021 | 9 | 14 |
| 2022 | 12 | 13 |
| 2023 | 10 | 13 |
| 2024 | 9 | 18 |
| 2025 | 10 | 14 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wastewater treatment method21 Jul 2026US 12,685,968 B2Kubota Corporation
- Process and system for simultaneous nitrification and denitrification2 Jun 2026US 12,643,803 B2Fluence Water Products and Innovation Ltd
- Systems and methods for biological transformation, concentration, and recovery of selenium from wastewater14 Apr 2026US 12,600,654 B2Arizona Board of Regents on behalf of Arizona State University
- Process for water treatment using immersed gas transfer membranes17 Mar 2026US 12,577,137 B2Bl Technologies, Inc.
- Submerged membrane unit with single drop aeration24 Feb 2026US 12,559,397 B2
- Process and system for simultaneous nitrification and denitrification17 Sep 2026US 2026/0274723 A1Fluence Water Products and Innovation Ltd
- Bioreactor with membrane filtration and methods for treating wastewater10 Sep 2026US 2026/0265098 A1Bl Technologies, Inc.
- Membrane bioreactor wastewater treatment using calcium carbonate27 Aug 2026US 2026/0250169 A1Omya International AG
- Systems and methods for water treatment16 Jul 2026US 2026/0200775 A1National University Corporation Kanazawa University
- Floating apparatus for membrane biofilm reactor and process for water treatment25 Jun 2026US 2026/0176180 A1Bl Technologies, Inc.
Most cited
By later US patents
- System and method for detecting time-bomb malware168US 9,536,091 B2FireEye, Inc. · 2017
- System and method for detecting time-bomb malware153US 10,083,302 B1FireEye, Inc. · 2018
- Apparatus for treating activated sludge and method of cleaning it143US 5,192,456 AKubota Corporation · 1993
- Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers134US 5,910,250 AZenon Environmental Inc. · 1999
- Cyclic aeration system for submerged membrane modules132US 6,245,239 B1Zenon Environmental Inc. · 2001