Method and system for controlling corrosion inhibitor feed
US-2026062815-A1 · Mar 5, 2026 · US
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SO4-S
SO4-S · 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 | C02F2209/19 |
| Official title | SO4-S |
| Display label | SO4-S |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2018 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 8 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for decreasing calcium sulfate precipitation in produced water
US-12565433-B2 · Mar 3, 2026 · US
Apparatus for treating wastewater and method of treating wastewater
US-2026028255-A1 · Jan 29, 2026 · US
Removal of sulfate from seawater
US-12448307-B2 · Oct 21, 2025 · US
Method of sulfate removal from seawater using high salinity produced water
US-12421142-B2 · Sep 23, 2025 · US
Methods for decreasing calcium sulfate precipitation in produced water
US-2024182332-A1 · Jun 6, 2024 · US
Method for remediating groundwater organic contamination by in-situ reaction zone
US-11897797-B2 · Feb 13, 2024 · US
Process for treating frac flowback and produced water including naturally occurring radioactive material
US-11834358-B2 · Dec 5, 2023 · US
Method for remediating groundwater organic contamination by in-situ reaction zone
US-2023373823-A1 · Nov 23, 2023 · US
Method of sulfate removal from seawater using high salinity produced water
US-2023331599-A1 · Oct 19, 2023 · US
Low salinity injection water composition and generation for enhanced oil recovery
US-2023331592-A1 · Oct 19, 2023 · US
Removal of sulfate from seawater
US-2023331598-A1 · Oct 19, 2023 · US
Use of a chlorine dioxide precursor for controlling ion metabolism of bacteria in cooling water systems
US-2023183111-A1 · Jun 15, 2023 · US
Method for reducing corrosion fatigue of evaporating tube in boiler
US-2023094476-A1 · Mar 30, 2023 · US
System and Method for Separating and In-Situ Analyzing A Multiphase Immiscible Fluid Mixture
US-2023086247-A1 · Mar 23, 2023 · US
Modelling of a fluid treatment system
US-2022236700-A1 · Jul 28, 2022 · US
Method and system for treating wastewater
US-2022127176-A1 · Apr 28, 2022 · US
Process for treating frac flowback and produced water including naturally occurring radioactive material
US-2021163327-A1 · Jun 3, 2021 · US
Addition of aluminum reagents to oxoanion-containing water streams
US-10071923-B2 · Sep 11, 2018 · US
Monitoring control device, water treatment system including same, and water treatment method
US-2016368782-A1 · Dec 22, 2016 · US