Autonomous chemical dosing system and methods of use thereof
US-12528714-B2 · Jan 20, 2026 · US
H2S
H2S · 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 | C02F2209/26 |
| Official title | H2S |
| Display label | H2S |
| Total patents | 25 |
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 | 1 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 1 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 7 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and controller for determining hydrogen sulfide treatment dosage
US-2025115493-A1 · Apr 10, 2025 · US
Method and system for abating the presence of a selected chemical substance in wastewater flowing in a wastewater channel system
US-12030796-B2 · Jul 9, 2024 · US
Reinforcement learning for H2S abatement
US-11772985-B2 · Oct 3, 2023 · US
Autonomous chemical dosing system and methods of use thereof
US-2023150836-A1 · May 18, 2023 · US
Method for treating wastewater and wastewater sludge using a percarboxylic acid
US-11535539-B2 · Dec 27, 2022 · US
Multivalent iron bio-inhibitor from waste bauxite residue to control reservoir souring
US-11535790-B2 · Dec 27, 2022 · US
Blend for odor control
US-11524905-B2 · Dec 13, 2022 · US
Method and system for controlling odor in water system
US-11420883-B2 · Aug 23, 2022 · US
Method and arrangement for cleaning a sensor
US-2022137403-A1 · May 5, 2022 · US
Multivalent iron bio-inhibitor from waste bauxite residue to control reservoir souring
US-2022073808-A1 · Mar 10, 2022 · US
Pump station arrangement and method for removing harmful fluids from wastewater
US-11235995-B2 · Feb 1, 2022 · US
Reinforcement learning for h2s abatement
US-2021284551-A1 · Sep 16, 2021 · US
Method and system for abating the presence of a selected chemical substance in wastewater flowing in a wastewater channel system
US-2021155513-A1 · May 27, 2021 · US
Self contained, automatic water quality monitoring and treatment system
US-2021147256-A1 · May 20, 2021 · US
Blend for Odor Control
US-2020399141-A1 · Dec 24, 2020 · US
Method and system for controlling odor in water system
US-2020255304-A1 · Aug 13, 2020 · US
Method for treating wastewater and wastewater sludge using a percarboxylic acid
US-2020048118-A1 · Feb 13, 2020 · US
Reduction of the amount of sulphur compounds in a sulphur compounds contaminated wastewater stream using a granular sludge treatment system
US-10059610-B2 · Aug 28, 2018 · US
Unit for treating flowing liquid
US-2017225982-A1 · Aug 10, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2209/26?
- CPC C02F2209/26 is the Cooperative Patent Classification code for “H2S.”
- How many patents are filed under CPC C02F2209/26 (H2S)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC C02F2209/26 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).