Methods and controller for determining hydrogen sulfide treatment dosage
US-2025115493-A1 · Apr 10, 2025 · 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 | C02F2209/265 |
| Official title | in the gas phase |
| Display label | in the gas phase |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 6 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reinforcement learning for H2S abatement
US-11772985-B2 · Oct 3, 2023 · US
Rotating Spray Device for Water Distribution on Media Bed of a Biofilter
US-2022362710-A1 · Nov 17, 2022 · US
Device and method for sulphur cycle-based advanced denitrification of waste water coupling autotrophic denitrification and heterotrophic denitrification
US-11434159-B2 · Sep 6, 2022 · US
Method and system for controlling odor in water system
US-11420883-B2 · Aug 23, 2022 · US
Rotating spray device for water distribution on media bed of a biofilter
US-11400412-B2 · Aug 2, 2022 · US
Device and method for sulphur cycle-based advanced denitrification of waste water coupling autotrophic denitrification and heterotrophic denitrification
US-2021317025-A1 · Oct 14, 2021 · US
Reinforcement learning for h2s abatement
US-2021284551-A1 · Sep 16, 2021 · US
Method and system for controlling odor in water system
US-2020255304-A1 · Aug 13, 2020 · US
Biofilter with fuzzy logic control
US-10010830-B2 · Jul 3, 2018 · US
Rotating Spray Device for Water Distribution on Media Bed of a Biofilter
US-2018021722-A1 · Jan 25, 2018 · US
Method of controlling addition rate of an odor control chemical
US-9815718-B2 · Nov 14, 2017 · US
Unit for treating flowing liquid
US-2017225982-A1 · Aug 10, 2017 · US
Biofilter with fuzzy logic control
US-2017120190-A1 · May 4, 2017 · US
Inhibition of sensor biofouling
US-2017101329-A1 · Apr 13, 2017 · US
Biofilter with fuzzy logic control
US-9586176-B2 · Mar 7, 2017 · US
Synergistic Wastewater Odor Control Composition, Systems, and Related Methods Therefor
US-2017015571-A1 · Jan 19, 2017 · US
Process to treat industrial wastewater
US-9376335-B2 · Jun 28, 2016 · US