Diquaternary compounds for corrosion inhibition and methods of use thereof
US-2025075126-A1 · Mar 6, 2025 · US
containing sulfur and oxygen
containing sulfur and oxygen · 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 | C09K15/12 |
| Official title | containing sulfur and oxygen |
| Display label | containing sulfur and oxygen |
| Total patents | 44 |
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 | 3 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and compositions for prevention of fouling in caustic towers
US-12173243-B2 · Dec 24, 2024 · US
Corrosion inhibitor having silica nanoparticles
US-2024199955-A1 · Jun 20, 2024 · US
Method of producing antioxidant with improved antioxidant ability and dispersion property for membrane-electrode assembly
US-11984628-B2 · May 14, 2024 · US
Corrosion inhibitor composition for use in the oil and gas industry
US-2024110096-A1 · Apr 4, 2024 · US
Stabilized DCD and/or alkyl thiophosphoric triamide solvent systems and use in agricultural applications
US-11795119-B2 · Oct 24, 2023 · US
Polyacrylate polymers for low carbon steel corrosion control
US-11634635-B2 · Apr 25, 2023 · US
Antioxidant having high antioxidant capability for fuel cell, and electrolyte membrane and membrane-electrode assembly comprising same
US-11594746-B2 · Feb 28, 2023 · US
Method of producing antioxidant with improved antioxidant ability and dispersion property for membrane-electrode assembly
US-2022416281-A1 · Dec 29, 2022 · US
Singlet oxygen scavenger
US-11390808-B2 · Jul 19, 2022 · US
Thiol-formyl hemiacetal corrosion inhibitors
US-11339320-B2 · May 24, 2022 · US
Antioxidant having high antioxidant capability for fuel cell, and electrolyte membrane and membrane-electrode assembly comprising same
US-2021305611-A1 · Sep 30, 2021 · US
Stabilized dcd and/or alkyl thiophosphoric triamide solvent systems and use in agricultural applications
US-2021253491-A1 · Aug 19, 2021 · US
Polyacrylate polymers for low carbon steel corrosion control
US-2021189236-A1 · Jun 24, 2021 · US
Methods And Compositions For Prevention Of Fouling In Caustic Towers
US-2021095215-A1 · Apr 1, 2021 · US
Stabilized DCD and/or alkyl thiophosphoric triamide solvent systems and use in agricultural applications
US-10954172-B2 · Mar 23, 2021 · US
Corrosion inhibitor compositions and methods of using same
US-10851299-B2 · Dec 1, 2020 · US
Stabilized dcd and/or alkyl thiophosphoric triamide solvent systems and use in agricultural applications
US-2020148606-A1 · May 14, 2020 · US
Singlet oxygen scavenger
US-2020140754-A1 · May 7, 2020 · US
Stabilized DCD and/or alkyl thiophosphoric triamide solvent systems and use in agricultural applications
US-10570068-B2 · Feb 25, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K15/12?
- CPC C09K15/12 is the Cooperative Patent Classification code for “containing sulfur and oxygen.”
- How many patents are filed under CPC C09K15/12 (containing sulfur and oxygen)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC C09K15/12 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).