Straight-line sewage treatment system for enhanced treatment of low c/n domestic sewage
US-2024092664-A1 · Mar 21, 2024 · US
characterised by the denitrification
characterised by the denitrification · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C02F3/305 |
| Official title | {characterised by the denitrification} |
| Display label | characterised by the denitrification |
| Total patents | 165 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 14 |
| 2018 | 10 |
| 2019 | 14 |
| 2020 | 20 |
| 2021 | 21 |
| 2022 | 18 |
| 2023 | 16 |
| 2024 | 16 |
| 2025 | 17 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and device for controlling pollutants in basin water used for irrigating farmland in extremely water-scarce areas
US-2020392027-A1 · Dec 17, 2020 · US
Partial nitrification-denitrification coupled two-stage autotrophic denitrification advanced nitrogen removal method
US-2020377398-A1 · Dec 3, 2020 · US
Method for preparing simultaneous nitrogen and phosphorus removal lightweight material and the use thereof
US-2020338485-A1 · Oct 29, 2020 · US
Coagulant composition for wastewater treatment
US-2020299157-A1 · Sep 24, 2020 · US
Method for the Biological Treatment of Nitrogen in Effluents by Nitritation
US-2020299163-A1 · Sep 24, 2020 · US
Purification method for water, purification device for water, and use of said purification device at low water temperature
US-2020288681-A1 · Sep 17, 2020 · US
Method for realizing rapid startup of denitrification biofilter
US-2020231479-A1 · Jul 23, 2020 · US
Biological removal of micropollutants from wastewater
US-10662098-B2 · May 26, 2020 · US
Membrane aerated anaerobic granular sludge reactor with efficient nitrogen removal and greenhouse gas mitigation
US-10604430-B2 · Mar 31, 2020 · US
Nitrogen removal method, nitrification-reaction promoting agent for water treatment, and water treatment method
US-10584046-B2 · Mar 10, 2020 · US
Apparatus and operating method for deep denitrification and toxicity reduction of wastewater
US-2019389756-A1 · Dec 26, 2019 · US
Bioreactor for treating sewage and sewage treatment system comprising the same
US-10494282-B2 · Dec 3, 2019 · US
Method for producing polyhydroxyalkanoic acid
US-2019330089-A1 · Oct 31, 2019 · US
Method and apparatus for biologically treating nitrogen
US-2019315643-A1 · Oct 17, 2019 · US
Method for controlling a treatment apparatus arrangement, a treatment apparatus arrangement for a treatment plant as well as a treatment plant
US-10384963-B2 · Aug 20, 2019 · US
Sewage treatment system using granule
US-10384965-B2 · Aug 20, 2019 · US
Method of treating wastewater and systems thereof
US-2019248688-A1 · Aug 15, 2019 · US
Hybrid reactor and process for removing selenium
US-10370274-B2 · Aug 6, 2019 · US
Systems and methods for controlling denitrification in a denitrifying biological reactor
US-2019202723-A1 · Jul 4, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F3/305?
- CPC C02F3/305 is the Cooperative Patent Classification code for “characterised by the denitrification.”
- How many patents are filed under CPC C02F3/305 (characterised by the denitrification)?
- Our database includes 165 publications tagged with this CPC code.
- Is patent activity under CPC C02F3/305 growing?
- Publication counts under this code: 16 in 2024 vs 17 in 2025 (latest complete years).