MULTI-CELL COx ELECTROLYZER STACKS
US-2024060194-A1 · Feb 22, 2024 · US
having diaphragms
having diaphragms · 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 | C25B9/77 |
| Official title | having diaphragms |
| Display label | having diaphragms |
| Total patents | 694 |
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 | 7 |
| 2016 | 12 |
| 2017 | 12 |
| 2018 | 21 |
| 2019 | 28 |
| 2020 | 24 |
| 2021 | 49 |
| 2022 | 70 |
| 2023 | 100 |
| 2024 | 152 |
| 2025 | 171 |
| 2026 | 48 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus for producing alkali hydroxide and method for operating apparatus for producing alkali hydroxide
US-2019226104-A1 · Jul 25, 2019 · US
Group of cells for power adaptation of electrochemical reactors
US-2019221873-A1 · Jul 18, 2019 · US
Electrochemical, halogenation, and oxyhalogenation systems and methods
US-2019203365-A1 · Jul 4, 2019 · US
Leak detection on a high-temperature fuel cell or electrolyzer
US-10290886-B2 · May 14, 2019 · US
System and method for tuning an electrochemical cell stack
US-10260157-B2 · Apr 16, 2019 · US
Water electrolysis device
US-2019062932-A1 · Feb 28, 2019 · US
Electrochemical stack compression system
US-2019020051-A1 · Jan 17, 2019 · US
Interconnector-electrochemical reaction single cell composite body, and electrochemical reaction cell stack
US-2018323446-A1 · Nov 8, 2018 · US
Electrochemical stack compression system
US-10109880-B2 · Oct 23, 2018 · US
Monitoring condition of electrochemical cells
US-2018245226-A1 · Aug 30, 2018 · US
Differential pressure water electrolysis system
US-10053783-B2 · Aug 21, 2018 · US
Electrolysis device and apparatus for producing electrolyzed ozonated water
US-10053380-B2 · Aug 21, 2018 · US
Dynamic decompression control for high pressure seals
US-10014537-B2 · Jul 3, 2018 · US
Electrolysis stack and electrolyzer
US-10006132-B2 · Jun 26, 2018 · US
Electrochemical cell having a cascade seal configuration and hydrogen reclamation
US-10000856-B2 · Jun 19, 2018 · US
Multi-stack electrochemical compressor system and method for operating
US-10000855-B2 · Jun 19, 2018 · US
System and method for tuning an electrochemical cell stack
US-2018148850-A1 · May 31, 2018 · US
System and method for tuning an electrochemical cell stack
US-2018148851-A1 · May 31, 2018 · US
Dynamic decompression control for high pressure seals
US-2018145348-A1 · May 24, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25B9/77?
- CPC C25B9/77 is the Cooperative Patent Classification code for “having diaphragms.”
- How many patents are filed under CPC C25B9/77 (having diaphragms)?
- Our database includes 694 publications tagged with this CPC code.
- Is patent activity under CPC C25B9/77 growing?
- Publication counts under this code: 152 in 2024 vs 171 in 2025 (latest complete years).