System and method for recovering nutrients from a high nitrogenous liquid waste
US-2024083791-A1 · Mar 14, 2024 · US
Nitrification and denitrification treatment (C02F3/308 takes precedence)
Nitrification and denitrification treatment (C02F3/308 takes precedence) · 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 | C02F3/302 |
| Official title | {Nitrification and denitrification treatment (C02F3/308 takes precedence)} |
| Display label | Nitrification and denitrification treatment (C02F3/308 takes precedence) |
| Total patents | 276 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 8 |
| 2017 | 20 |
| 2018 | 19 |
| 2019 | 19 |
| 2020 | 35 |
| 2021 | 28 |
| 2022 | 24 |
| 2023 | 37 |
| 2024 | 32 |
| 2025 | 28 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Membrane bioreactor system using reciprocating membrane
US-10112148-B2 · Oct 30, 2018 · US
Nitrogen removal method, nitrification-reaction promoting agent for water treatment, and water treatment method
US-2018305233-A1 · Oct 25, 2018 · US
Bioreactor for treating sewage and sewage treatment system comprising the same
US-2018297879-A1 · Oct 18, 2018 · US
Carrier including ammonium oxidizing bacteria immobilized therein and method for preparing same
US-10081804-B2 · Sep 25, 2018 · US
Wastewater treatment process
US-9994469-B2 · Jun 12, 2018 · US
Process, apparatus and membrane bioreactor for wastewater treatment
US-9975796-B2 · May 22, 2018 · US
Membrane bioreactor system using reciprocating membrane
US-2018117534-A1 · May 3, 2018 · US
Wastewater treatment method and equipment using a dual-diffusion oxygen supply horizontal-flow biofilm
US-9957177-B2 · May 1, 2018 · US
Apparatus for reliving surface-layer clogging of denitrification deep-bed filter and method for running the same
US-2018099887-A1 · Apr 12, 2018 · US
Apparatus for sewage deep denitrification with high pollutant carrying capacity and low energy consumption, and method for running the same
US-2018099885-A1 · Apr 12, 2018 · US
Assembly for supporting mixed biofilm
US-2018044211-A1 · Feb 15, 2018 · US
Membrane bioreactor system using reciprocating membrane
US-9884295-B2 · Feb 6, 2018 · US
Microbial fuel cell system
US-2018016169-A1 · Jan 18, 2018 · US
Wastewater Treatment System
US-2018002208-A1 · Jan 4, 2018 · US
Internal sulfur cycling sani (isc-sani) process for biological wastewater treatment
US-2017369350-A1 · Dec 28, 2017 · US
Method and installation for pre-treatment employing a filter cake
US-2017368485-A1 · Dec 28, 2017 · US
Vertical sewage treatment device and method
US-9845257-B2 · Dec 19, 2017 · US
Treatment of municipal wastewater with anaerobic digestion
US-9845260-B2 · Dec 19, 2017 · US
Tubular elements for cake filtration and method of providing a filtration cake
US-2017355629-A1 · Dec 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F3/302?
- CPC C02F3/302 is the Cooperative Patent Classification code for “Nitrification and denitrification treatment (C02F3/308 takes precedence).”
- How many patents are filed under CPC C02F3/302 (Nitrification and denitrification treatment (C02F3/308 takes precedence))?
- Our database includes 276 publications tagged with this CPC code.
- Is patent activity under CPC C02F3/302 growing?
- Publication counts under this code: 32 in 2024 vs 28 in 2025 (latest complete years).