C02F 2209/12
Volatile fatty acids
Official title: Volatile Fatty Acids (VFAs)
C02F2209/12 (Volatile fatty acids) appears on 13 US grants and 28 published applications in this corpus.
Search patents in C02F- Granted patents
- 13
- Published applications
- 28
- Assignees
- 24
- Inventors
- 87
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 3 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 3 |
| 2021 | 0 | 0 |
| 2022 | 1 | 5 |
| 2023 | 2 | 2 |
| 2024 | 1 | 2 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Waste treatment system and waste treatment method9 Sep 2025US 12,410,085 B2Mitsubishi Heavy Industries, Ltd.
- Digestion of organic sludge24 Jun 2025US 12,338,147 B2HaskoningDHV Nederland B.V.
- Volatile fatty acid control20 Aug 2024US 12,065,367 B2Ecolab USA Inc.
- Methods and systems for digesting biosolids and recovering phosphorus26 Dec 2023US 11,851,355 B2
- Bio-electrochemical sensor, system and method for monitoring and controlling organic carbon levels in a wastewater treatment process19 Dec 2023US 11,845,680 B2Sentry: Water Monitoring and Control Inc.
- System and method for producing product gas comprising methane30 Jan 2025US 2025/0034598 A1Nature Energy Biogas A/S
- Methods and systems for digesting biosolids and recovering phosphorus6 Jun 2024US 2024/0182345 A1
- Bio-electrochemical sensor, system and method for monitoring and controlling organic carbon levels in a wastewater treatment process8 Feb 2024US 2024/0043297 A1Sentry: Water Monitoring and Control Inc.
- Waste treatment system and waste treatment method21 Dec 2023US 2023/0406746 A1Mitsubishi Heavy Industries, Ltd.
- Waste treatment system and waste treatment method17 Aug 2023US 2023/0257783 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Sewage treatment process with phosphorus removal88US 6,712,970 B1Enviroquip, Inc. · 2004
- Biochemically enchanced thermophilic treatment process38US 6,036,862 A2000
- Biochemically enhanced thermophlic treatment process28US 6,660,164 B12003
- Method for automotive dose control of liquid treatment chemicals23US 6,129,104 ATetra Process Technologies a Severn Trent Services Company · 2000
- Method for treatment of organic material in a two-step anaerobic biochemical reactor12US 6,551,510 B1Norsk Hydro ASA · 2003