Treatment of acid gases using molten alkali metal borates, and associated methods of separation
US-12558651-B2 · Feb 24, 2026 · US
Mixtures of hydrogen sulfide and sulfur oxides
Mixtures of hydrogen sulfide and sulfur oxides · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D53/523 |
| Official title | {Mixtures of hydrogen sulfide and sulfur oxides} |
| Display label | Mixtures of hydrogen sulfide and sulfur oxides |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for production of elemental sulfur and sulfuric acid
US-12545580-B2 · Feb 10, 2026 · US
Exhaust gas treatment system for an ammonia-containing exhaust gas
US-12427475-B2 · Sep 30, 2025 · US
Hydrogen production from gasification of sour gas
US-12415723-B2 · Sep 16, 2025 · US
Process for simultaneous removal of hydrogen sulfide and heavy metals
US-12415726-B2 · Sep 16, 2025 · US
Hydrogen production from gasification of sour gas
US-2025100873-A1 · Mar 27, 2025 · US
Method for underground separation of components in sulfur-containing flue gas and sequestration of carbon dioxide and sulfides
US-12203346-B1 · Jan 21, 2025 · US
Process for simultaneous removal of hydrogen sulfide and heavy metals
US-2024124305-A1 · Apr 18, 2024 · US
Treatment of acid gases using molten alkali metal borates, and associated methods of separation
US-2024033684-A1 · Feb 1, 2024 · US
Method for production of elemental sulfur by part or fully catalytic oxidation of Claus tail gas
US-11807527-B2 · Nov 7, 2023 · US
Exhaust gas treatment system for an ammonia-containing exhaust gas
US-2023249126-A1 · Aug 10, 2023 · US
Method for production of sulfur and sulfuric acid
US-11691877-B2 · Jul 4, 2023 · US
Revamping of a claus plant with a sulfuric acid plan
US-11618677-B2 · Apr 4, 2023 · US
Purification of gases containing sulfur compounds
US-11607643-B2 · Mar 21, 2023 · US
Treatment of acid gases using molten alkali metal borates, and associated methods of separation
US-11602716-B2 · Mar 14, 2023 · US
Treating sulfur dioxide containing stream by acid aqueous absorption
US-11548784-B1 · Jan 10, 2023 · US
Treatment of acid gases using molten alkali metal borates, and associated methods of separation
US-2022258098-A1 · Aug 18, 2022 · US
Method for production of elemental sulfur by part or fully catalytic oxidation of claus tail gas
US-2022234891-A1 · Jul 28, 2022 · US
Method for production of elemental sulfur and sulfuric acid
US-2022227625-A1 · Jul 21, 2022 · US
Purification of gases containing sulfur compounds
US-2022184548-A1 · Jun 16, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D53/523?
- CPC B01D53/523 is the Cooperative Patent Classification code for “Mixtures of hydrogen sulfide and sulfur oxides.”
- How many patents are filed under CPC B01D53/523 (Mixtures of hydrogen sulfide and sulfur oxides)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC B01D53/523 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).