Palladium-hydrogen ph electrode
US-2024295520-A1 · Sep 5, 2024 · US
Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes
Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N27/31 |
| Official title | Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes |
| Display label | Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes |
| Total patents | 70 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 13 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 12 |
| 2022 | 7 |
| 2023 | 8 |
| 2024 | 3 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing a sensor cap with a membrane
US-11796453-B2 · Oct 24, 2023 · US
Integrated biochemical sensor and method of manufacturing the same
US-11774439-B2 · Oct 3, 2023 · US
Electrochemical detector
US-11719667-B2 · Aug 8, 2023 · US
System comprising pH/ORP electrodes with improved anti-poisoning characteristics
US-11719666-B2 · Aug 8, 2023 · US
Device and method for detecting restrictions in gas access to a gas sensor
US-11686714-B2 · Jun 27, 2023 · US
Analyte sensor and its manufacturing
US-2023137770-A1 · May 4, 2023 · US
Potentiometric probe
US-11585780-B2 · Feb 21, 2023 · US
Electrochemical sensor
US-2023026555-A1 · Jan 26, 2023 · US
Electrochemical sensor
US-11486855-B2 · Nov 1, 2022 · US
Method for producing an ISE half-cell, ISE half-cell, sensor, and multi-parameter sensor
US-11460429-B2 · Oct 4, 2022 · US
Device for detecting analytes in a sample, and methods of use thereof
US-2022283116-A1 · Sep 8, 2022 · US
Electrochemical detection of gas phase chemicals
US-11378547-B1 · Jul 5, 2022 · US
Integrated biochemical sensor and method of manufacturing the same
US-2022178908-A1 · Jun 9, 2022 · US
Electrochemical half-cell, electrochemical sensor, manufacturing method of solid electrolyte and electrochemical half-cell, and use of solid electrolyte in electrochemical half-cell
US-2022170876-A1 · Jun 2, 2022 · US
Diffusion control layer for use in electrochemical sensors
US-2022026386-A1 · Jan 27, 2022 · US
Sensor element and method for manufacturing a sensor element
US-11187668-B2 · Nov 30, 2021 · US
Sensor arrangement
US-11112380-B2 · Sep 7, 2021 · US
Electrochemical sensor with exchangeable electrode assembly
US-11105768-B2 · Aug 31, 2021 · US
Method for preparing dual-functional hybrid thin-film for self-calibration detection of tumor-derived exosomes
US-11105767-B1 · Aug 31, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N27/31?
- CPC G01N27/31 is the Cooperative Patent Classification code for “Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes.”
- How many patents are filed under CPC G01N27/31 (Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes)?
- Our database includes 70 publications tagged with this CPC code.
- Is patent activity under CPC G01N27/31 growing?
- Publication counts under this code: 3 in 2024 vs 7 in 2025 (latest complete years).