Method for ecologic configuration of oil production high-salt wastewater artificial wetland to realize up-to-standard operation in winter
US-11383997-B2 · Jul 12, 2022 · US
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Oxidation ditches
Oxidation ditches · 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 | C02F3/1257 |
| Official title | {Oxidation ditches} |
| Display label | Oxidation ditches |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 7 |
| 2021 | 3 |
| 2022 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process aeration balance controller in wastewater treatment
US-11365141-B2 · Jun 21, 2022 · US
Method for modifying wastewater treatment device
US-11299413-B2 · Apr 12, 2022 · US
Method for ecologic configuration of oil production high-salt wastewater artificial wetland to realize up-to-standard operation in winter
US-2021403355-A1 · Dec 30, 2021 · US
Organics Removal For Algae Biofuel Systems
US-2021108165-A1 · Apr 15, 2021 · US
Method for modifying wastewater treatment device
US-2021094854-A1 · Apr 1, 2021 · US
Method for determining flow velocity of a liquid in a circulation channel
US-10828611-B2 · Nov 10, 2020 · US
Organic wastewater treatment method and organic wastewater treatment device
US-10822260-B2 · Nov 3, 2020 · US
Process Aeration Balance Controller in Wastewater Treatment
US-2020299162-A1 · Sep 24, 2020 · US
A method of mixing fluid flowing in a raceway channel and raceway channel therefor
US-2020238233-A1 · Jul 30, 2020 · US
Method for determining flow velocity of a liquid in a circulation channel
US-2020156029-A1 · May 21, 2020 · US
Organic wastewater treatment method and organic wastewater treatment device
US-2020031697-A1 · Jan 30, 2020 · US
Aeration discs and methods for using same
US-10532940-B2 · Jan 14, 2020 · US
Plant and control method for aerobic treatment
US-10287196-B2 · May 14, 2019 · US
Method of controlling a circulation-type wastewater treatment plant via a stored parameter relationship in a control unit
US-10273173-B2 · Apr 30, 2019 · US
Aeration Discs and Methods For Using Same
US-2018111862-A1 · Apr 26, 2018 · US
Orbital wastewater treatment system and method of operating same
US-9896361-B2 · Feb 20, 2018 · US
Plant for treatment of liquid as well as method for controlling such a plant
US-2017144909-A1 · May 25, 2017 · US
Plant and control method for aerobic treatment
US-2017081224-A1 · Mar 23, 2017 · US
Orbital wastewater treatment system and method of operating same
US-2016107909-A1 · Apr 21, 2016 · US