Multi-stage treatment for iron sulfide scales
US-2018347316-A1 · Dec 6, 2018 · US
Sulfur
Sulfur · 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 | C09K8/532 |
| Official title | Sulfur |
| Display label | Sulfur |
| Total patents | 235 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 11 |
| 2017 | 25 |
| 2018 | 23 |
| 2019 | 39 |
| 2020 | 21 |
| 2021 | 14 |
| 2022 | 20 |
| 2023 | 20 |
| 2024 | 22 |
| 2025 | 27 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Iron sulfide removal in oilfield applications
US-2018340113-A1 · Nov 29, 2018 · US
Compositions and Methods For Enhanced Fracture Cleanup Using Redox Treatment
US-2018320054-A1 · Nov 8, 2018 · US
Activity enhanced scale dispersant for treating inorganic sulfide scales
US-10113102-B2 · Oct 30, 2018 · US
Use of a copolymer made from styrene sulphonic acid to inhibit or slow the formation of sulphide deposits
US-10106722-B2 · Oct 23, 2018 · US
Diphenyliodonium salts as sulfidogenesis inhibitors and antimicrobials
US-10098346-B2 · Oct 16, 2018 · US
Pcr amplification methods for detecting and quantifying sulfate-reducing bacteria in oilfield fluids
US-2018291428-A1 · Oct 11, 2018 · US
Use of sulfonium salts as hydrogen sulfide inhibitors
US-2018245004-A1 · Aug 30, 2018 · US
Use of Gaseous Phase Natural Gas as a Carrier Fluid During a Well Intervention Operation
US-2018238153-A1 · Aug 23, 2018 · US
In-situ generation of chlorine dioxide using methanesulfonic acid for remediation of scale and sulfide
US-2018170752-A1 · Jun 21, 2018 · US
Squeeze treatment for in situ scavenging of hydrogen sulfide
US-2018171771-A1 · Jun 21, 2018 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components
US-2018169714-A1 · Jun 21, 2018 · US
Composition for remediating iron sulfide in oilfield production systems
US-2018148632-A1 · May 31, 2018 · US
Composition And Method For Inhibition Of Sulfide Scales
US-2018105732-A1 · Apr 19, 2018 · US
Composition and method for scavenging sulfides and mercaptans
US-2018100096-A1 · Apr 12, 2018 · US
Methods and systems for neutralizing hydrogen sulfide during drilling
US-2018072936-A1 · Mar 15, 2018 · US
Compositions, systems, and methods for removing iron sulfide scale from oilfield components using methyl acrylate
US-2018072940-A1 · Mar 15, 2018 · US
Squeeze treatment for in situ scavenging of hydrogen sulfide
US-9896924-B2 · Feb 20, 2018 · US
Method for removing iron sulfide scale from oil well equipment
US-2017362492-A1 · Dec 21, 2017 · US
Activity enhanced scale dispersant for treating inorganic sulfide scales
US-2017355895-A1 · Dec 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/532?
- CPC C09K8/532 is the Cooperative Patent Classification code for “Sulfur.”
- How many patents are filed under CPC C09K8/532 (Sulfur)?
- Our database includes 235 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/532 growing?
- Publication counts under this code: 22 in 2024 vs 27 in 2025 (latest complete years).