Method of capturing carbon dioxide
US-2025153098-A1 · May 15, 2025 · US
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Sulfites
Sulfites · 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 | C01F11/48 |
| Official title | Sulfites |
| Display label | Sulfites |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process to convert reduced sulfur species and water into hydrogen and sulfuric acid
US-12110601-B2 · Oct 8, 2024 · US
Calcium oxide or magnesium oxide production with alkali and sulfur dioxide intermediates
US-12017985-B2 · Jun 25, 2024 · US
Process to convert reduced sulfur species and water into hydrogen and sulfuric acid
US-2022411940-A1 · Dec 29, 2022 · US
Process To Convert Reduced Sulfur Species And Water Into Hydrogen And Sulfuric Acid
US-2022106691-A1 · Apr 7, 2022 · US
Process to convert reduced sulfur species and water into hydrogen and sulfuric acid
US-11180860-B2 · Nov 23, 2021 · US
Process To Convert Reduced Sulfur Species And Water Into Hydrogen And Sulfuric Acid
US-2019376191-A1 · Dec 12, 2019 · US
Sour gas combustion using in-situ oxygen production and chemical looping combustion
US-9566546-B2 · Feb 14, 2017 · US
Oxidation control for improved flue gas desulfurization performance
US-9321006-B2 · Apr 26, 2016 · US
Sour Gas Combustion Using In-situ Oxygen Production and Chemical Looping Combustion
US-2015204539-A1 · Jul 23, 2015 · US