Acid gas enrichment method and system
US-10875769-B2 · Dec 29, 2020 · US
Hydrogen sulfide
Hydrogen sulfide · 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 | B01D53/8612 |
| Official title | {Hydrogen sulfide} |
| Display label | Hydrogen sulfide |
| Total patents | 112 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 13 |
| 2018 | 9 |
| 2019 | 9 |
| 2020 | 18 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 10 |
| 2024 | 17 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Direct oxidation of hydrogen sulfide in a hydroprocessing recylce gas stream with hydrogen purification
US-2020353409-A1 · Nov 12, 2020 · US
Gas treatment method
US-10786782-B2 · Sep 29, 2020 · US
Helium recovery from gaseous streams
US-10765995-B2 · Sep 8, 2020 · US
Acid gas enrichment method and system
US-2020255291-A1 · Aug 13, 2020 · US
Process for energy recovery in carbon black production
US-10723964-B2 · Jul 28, 2020 · US
Plant and process for treating a stream comprising hydrogen sulfide
US-2020207622-A1 · Jul 2, 2020 · US
Method of sweetening hydrocarbon gas from hydrogen sulfide
US-2020197865-A1 · Jun 25, 2020 · US
A process for treating the off gas from a carbon black plant to recover sulphur
US-2020188850-A1 · Jun 18, 2020 · US
Process for the combined removal of siloxanes and sulfur-containing compounds from biogas streams
US-10682607-B2 · Jun 16, 2020 · US
A method for inter-bed cooling in wet gas sulfuric acid plants
US-2020149735-A1 · May 14, 2020 · US
Claus unit treatment of shutdown tail gas
US-10618005-B2 · Apr 14, 2020 · US
Process for preparing a catalyst or a trapping mass from molten salts
US-2020070137-A1 · Mar 5, 2020 · US
Systems and methods for separating hydrogen sulfide from carbon dioxide in a high-pressure mixed stream
US-10569219-B2 · Feb 25, 2020 · US
Desulphurisation material comprising copper supported on zinc oxide
US-10569251-B2 · Feb 25, 2020 · US
Process for producing a purified gas stream
US-2020047117-A1 · Feb 13, 2020 · US
Method and device for the desulphurisation of a gas flow
US-10556203-B2 · Feb 11, 2020 · US
Method and system for catalytic oxidation of a lean h2s stream
US-2019366266-A1 · Dec 5, 2019 · US
A process for the combined removal of siloxanes and sulfur-containing compounds from biogas streams
US-2019344218-A1 · Nov 14, 2019 · US
Claus unit treatment of shutdown tail gas
US-2019262773-A1 · Aug 29, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D53/8612?
- CPC B01D53/8612 is the Cooperative Patent Classification code for “Hydrogen sulfide.”
- How many patents are filed under CPC B01D53/8612 (Hydrogen sulfide)?
- Our database includes 112 publications tagged with this CPC code.
- Is patent activity under CPC B01D53/8612 growing?
- Publication counts under this code: 17 in 2024 vs 6 in 2025 (latest complete years).