Hydrogen production system and method for controlling hydrogen production system
US-2026071341-A1 · Mar 12, 2026 · US
Cylindrical cells
Cylindrical cells · 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 | C25B9/015 |
| Official title | Cylindrical cells |
| Display label | Cylindrical cells |
| Total patents | 48 |
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 | 1 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrochemical device suitable to work both as electrolyser and fuel cell
US-2025357496-A1 · Nov 20, 2025 · US
Methods of generating electricity
US-2025341007-A1 · Nov 6, 2025 · US
Gas production system
US-2025305155-A1 · Oct 2, 2025 · US
High-pressure electrolyzer assembly and vehicle with an electrolyzer assembly
US-12428739-B2 · Sep 30, 2025 · US
System and method for underwater shock generation
US-12372341-B1 · Jul 29, 2025 · US
Electrochemical cells for hydrogen gas production and electricity generation, and related systems and methods
US-12359327-B2 · Jul 15, 2025 · US
Hydrogen generation system and hydrogen generation method
US-2025223707-A1 · Jul 10, 2025 · US
Electrolytic cell
US-2025179664-A1 · Jun 5, 2025 · US
Photodecomposition module, photodecomposition cell, decomposition system, living environment sustaining system, and supply amount adjustment system
US-12304814-B2 · May 20, 2025 · US
Reductive dimerization of furfural via a continuous process
US-12234213-B2 · Feb 25, 2025 · US
Electrolysis device, electrolysis system, and electrolysis method for alternating current induction power supply
US-2024425999-A1 · Dec 26, 2024 · US
Vehicle oxygen generating system
US-12172498-B2 · Dec 24, 2024 · US
High-temperature steam electrolysis device, hydrogen production method, and hydrogen production system
US-2024327995-A1 · Oct 3, 2024 · US
Electrolysis system and method of driving electrolysis system
US-2024318328-A1 · Sep 26, 2024 · US
Soec stack with fuel flow from periphery towards center
US-2024175147-A1 · May 30, 2024 · US
Magnetohydrodynamic device and method for gas production in microgravity
US-2024060197-A1 · Feb 22, 2024 · US
Reductive dimerization of furfural via a continuous process
US-2023416214-A1 · Dec 28, 2023 · US
Electrolyzer reactor and related methods
US-11668014-B2 · Jun 6, 2023 · US
Carbon-assisted solid oxide electrolysis cell
US-2023167562-A1 · Jun 1, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25B9/015?
- CPC C25B9/015 is the Cooperative Patent Classification code for “Cylindrical cells.”
- How many patents are filed under CPC C25B9/015 (Cylindrical cells)?
- Our database includes 48 publications tagged with this CPC code.
- Is patent activity under CPC C25B9/015 growing?
- Publication counts under this code: 6 in 2024 vs 10 in 2025 (latest complete years).