System and methods for wastewater treatment
US-12590021-B2 · Mar 31, 2026 · US
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in the gas phase
in the gas phase · 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 | C02F2209/235 |
| Official title | in the gas phase |
| Display label | in the gas phase |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 3 |
| 2022 | 4 |
| 2024 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Wash water processing apparatus and sterilization and water-purification apparatus, and wash water processing method
US-12139430-B2 · Nov 12, 2024 · US
Wastewater treatment device and wastewater treatment method
US-12060288-B2 · Aug 13, 2024 · US
System and Methods for Wastewater Treatment
US-2022380244-A1 · Dec 1, 2022 · US
Wash water processing apparatus and sterilization and water-purification apparatus, and wash water processing method
US-2022212971-A1 · Jul 7, 2022 · US
Wastewater treatment device and wastewater treatment method
US-2022162099-A1 · May 26, 2022 · US
Wastewater treatment device and wastewater treatment method
US-11279640-B2 · Mar 22, 2022 · US
Wastewater treatment device and wastewater treatment method
US-2020216343-A1 · Jul 9, 2020 · US
Portable water purifier
US-2020148564-A1 · May 14, 2020 · US
Wastewater treatment device and wastewater treatment method
US-10626032-B2 · Apr 21, 2020 · US
Apparatus and operating method for deep denitrification and toxicity reduction of wastewater
US-2019389756-A1 · Dec 26, 2019 · US
Process and facility for treating produced water from an oil & gas field
US-2019233315-A1 · Aug 1, 2019 · US
Regulating method for a water treatment installation using measured parameters and control of an ozonisation device
US-10287182-B2 · May 14, 2019 · US
Wastewater treatment device and wastewater treatment method
US-2019092662-A1 · Mar 28, 2019 · US
Water treatment apparatus and water treatment method
US-2018265385-A1 · Sep 20, 2018 · US
Closed rearing method and closed rearing apparatus
US-2018220628-A1 · Aug 9, 2018 · US
Regulating method and regulating device for water treatment
US-2018215631-A1 · Aug 2, 2018 · US
Water treatment system and water treatment method
US-2018105443-A1 · Apr 19, 2018 · US
Plasma generation method and sterile water production method
US-2018002199-A1 · Jan 4, 2018 · US
Pressure-less ozonated di-water (DIO3) recirculation reclaim system
US-9796603-B2 · Oct 24, 2017 · US