C02F 3/2893
With biogas recycling
Official title: {with biogas recycling}
C02F3/2893 (With biogas recycling) appears on 51 US grants and 75 published applications in this corpus.
Search patents in C02F- Granted patents
- 51
- Published applications
- 75
- Assignees
- 52
- Inventors
- 154
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 3 | 7 |
| 2014 | 0 | 3 |
| 2015 | 2 | 7 |
| 2016 | 4 | 3 |
| 2017 | 3 | 3 |
| 2018 | 0 | 8 |
| 2019 | 3 | 9 |
| 2020 | 3 | 5 |
| 2021 | 10 | 9 |
| 2022 | 7 | 1 |
| 2023 | 2 | 6 |
| 2024 | 5 | 3 |
| 2025 | 4 | 3 |
| 2026 | 4 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- System and method for improved anaerobic digestion18 Aug 2026US 12,709,563 B2Topstone Ventures, LLC
- Anaerobic digester with self-delivery of accumulated solids16 Jun 2026US 12,655,048 B2Virginia Tech Intellectual Properties, Inc.
- Hybrid solar still and anaerobic membrane bioreactor for wastewater treatment14 Apr 2026US 12,600,655 B2Kuwait Institute for Scientific Research
- Biochar-anaerobic membrane biological treatment system and process27 Jan 2026US 12,533,637 B2Xi'an University of Architecture and Technology
- Granular sludge reactor system comprising an external separator30 Dec 2025US 12,509,379 B2Veolia Water Solutions & Technologies Support
- Floating Equipment Support10 Sep 2026US 2026/0265100 A1
- Hybrid solar still and anaerobic membrane bioreactor for wastewater treatment15 Jan 2026US 2026/0015274 A1Kuwait Institute for Scientific Research
- System for maximizing production of bio-gas and minimizing emission of process wastes8 Jan 2026US 2026/0008704 A1
- Method of filtering wastewater and a wastewater treatment system18 Dec 2025US 2025/0382212 A1Bioscavenge Aps
- Method of filtering tannery wastewater and a tannery wastewater treatment system4 Dec 2025US 2025/0368541 A1ECCO Sko A/S
Most cited
By later US patents
- Micro-aeration of sulfide removal from biogas12US 8,366,932 B1Iowa State University Research Foundation, Inc. · 2013
- Zero excess sludge membrane bioreactor10US 7,311,833 B22007
- System and method for improved anaerobic digestion4US 10,233,104 B2Verliant Energy, Inc. · 2019
- Syngas biomethanation process and anaerobic digestion system4US 9,284,203 B2Anaergia Inc. · 2016
- System and method for improved anaerobic digestion4US 9,481,589 B2Verliant Energy, Inc. · 2016