Device and method for measuring voltage by using optical element
US-2023417804-A1 · Dec 28, 2023 · US
using light-emitting devices, e.g. LED, optocouplers {(G01R31/31901 takes precedence)}
using light-emitting devices, e.g. LED, optocouplers {(G01R31/31901 takes precedence)} · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01R15/22 |
| Official title | using light-emitting devices, e.g. LED, optocouplers {(G01R31/31901 takes precedence)} |
| Display label | using light-emitting devices, e.g. LED, optocouplers {(G01R31/31901 takes precedence)} |
| Total patents | 84 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 8 |
| 2023 | 12 |
| 2024 | 15 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Safety switching apparatus, in particular for the monitored switching on of an electrical and/or electronic load
US-2023358807-A1 · Nov 9, 2023 · US
Partial discharge transducer
US-11802901-B2 · Oct 31, 2023 · US
Voltage indicators
US-2023296649-A1 · Sep 21, 2023 · US
Voltage Transient Detector and Current Transient Detector
US-2023246433-A1 · Aug 3, 2023 · US
Integrated circuit and method for diagnosing an integrated circuit
US-2023213577-A1 · Jul 6, 2023 · US
Electrically-isolated high-voltage sensor with low power dissipation
US-11630131-B2 · Apr 18, 2023 · US
Integrated circuit and method for diagnosing an integrated circuit
US-11624779-B2 · Apr 11, 2023 · US
Automatic test equipement having fiber optic connections to remote servers
US-11604219-B2 · Mar 14, 2023 · US
Voltage indicators
US-11598792-B2 · Mar 7, 2023 · US
Isolated voltage detection with current limiters
US-11602022-B2 · Mar 7, 2023 · US
Electrically-isolated high-voltage sensor with low power dissipation
US-2023013103-A1 · Jan 19, 2023 · US
State detection apparatus
US-2022308096-A1 · Sep 29, 2022 · US
Optical voltage prove
US-2022291260-A1 · Sep 15, 2022 · US
Voltage measurement method and apparatus
US-11385273-B2 · Jul 12, 2022 · US
Isolated voltage detection with current limiters
US-2022201815-A1 · Jun 23, 2022 · US
Automatic test equipement having fiber optic connections to remote servers
US-2022187357-A1 · Jun 16, 2022 · US
Partial discharge transducer
US-11287463-B2 · Mar 29, 2022 · US
Partial discharge transducer
US-2022091174-A1 · Mar 24, 2022 · US
Integrated circuit and method for diagnosing an integrated circuit
US-2022018899-A1 · Jan 20, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01R15/22?
- CPC G01R15/22 is the Cooperative Patent Classification code for “using light-emitting devices, e.g. LED, optocouplers {(G01R31/31901 takes precedence)}.”
- How many patents are filed under CPC G01R15/22 (using light-emitting devices, e.g. LED, optocouplers {(G01R31/31901 takes precedence)})?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC G01R15/22 growing?
- Publication counts under this code: 15 in 2024 vs 7 in 2025 (latest complete years).