Hydrogen sulfide purification method and lithium sulfide production method
US-2025178897-A1 · Jun 5, 2025 · US
Hydrogen sulfides
Hydrogen sulfides · 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 | C01B17/16 |
| Official title | Hydrogen sulfides |
| Display label | Hydrogen sulfides |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for purifying hydrogen sulfide and method for producing lithium sulfide
US-2025178898-A1 · Jun 5, 2025 · US
Composite material and use thereof in desulfurization
US-12233397-B2 · Feb 25, 2025 · US
Molecular sieve complex, composite material and application thereof
US-12233396-B2 · Feb 25, 2025 · US
Catalyst and application, and method for removing carbonyl sulfide in natural gas
US-2024408582-A1 · Dec 12, 2024 · US
Composite amine absorbent, removal unit, and removal method
US-2024342686-A1 · Oct 17, 2024 · US
Hydrogen sulfide purification method, lithium sulfide production method, hydrogen sulfide purification device, and lithium sulfide production device
US-2024270575-A1 · Aug 15, 2024 · US
Power generation system and method for generating electricity from gaseous flowback
US-2024167173-A1 · May 23, 2024 · US
Method for producing package including hydrogen sulfide sustained release agent, hydrogen sulfide sustained release agent, hydrogen sulfide sustained release composite, and method for generating hydrogen sulfide using same
US-11932479-B2 · Mar 19, 2024 · US
Composite material and use thereof in desulfurization
US-2023149892-A1 · May 18, 2023 · US
Molecular sieve complex, composite material and application thereof
US-2023149891-A1 · May 18, 2023 · US
Hydrogen sulfide mixture, method for producing same, and filling container
US-11312625-B2 · Apr 26, 2022 · US
Hydrogen sulfide and/or nitrite in the treatment and prevention of atrial fibrillation
US-11116731-B2 · Sep 14, 2021 · US
Package including hydrogen sulfide sustained release agent and method for producing same, hydrogen sulfide sustained release agent, hydrogen sulfide sustained releasecomposite, and method for generating hydrogen sulfide using same
US-2021269231-A1 · Sep 2, 2021 · US
Generating a soft sensor for crude stabilization in the petroleum industry
US-11078428-B2 · Aug 3, 2021 · US
Catalytic conversion of DSO in presence of water
US-11072529-B2 · Jul 27, 2021 · US
Methods of generating and corrosion testing aqueous gas streams prepared from aqueous acid and salt precursor solutions
US-11035836-B2 · Jun 15, 2021 · US
Chemical probes for hydrogen sulfide
US-10989659-B2 · Apr 27, 2021 · US
Composite amine absorbing solution, and device and method for removing CO2 or H2S or both
US-10960346-B2 · Mar 30, 2021 · US
Complex comprising sulfur, a method for manufacturing the same, and a method for manufacturing a solid electrolyte
US-10865108-B2 · Dec 15, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B17/16?
- CPC C01B17/16 is the Cooperative Patent Classification code for “Hydrogen sulfides.”
- How many patents are filed under CPC C01B17/16 (Hydrogen sulfides)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC C01B17/16 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).