Abnormality detecting circuit and abnormality detecting method
US-2016377666-A1 · Dec 29, 2016 · US
Testing lamps
Testing lamps · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01R31/44 |
| Official title | Testing lamps |
| Display label | Testing lamps |
| Total patents | 626 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 37 |
| 2016 | 62 |
| 2017 | 102 |
| 2018 | 130 |
| 2019 | 112 |
| 2020 | 65 |
| 2021 | 40 |
| 2022 | 20 |
| 2023 | 18 |
| 2024 | 24 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrical device testing fixture
US-2016370405-A1 · Dec 22, 2016 · US
High throughput hot testing method and system for high-brightness light-emitting diodes
US-9519033-B2 · Dec 13, 2016 · US
Communication Device and Communication System
US-2016341797-A1 · Nov 24, 2016 · US
Semiconductor device and method for testing same
US-2016334458-A1 · Nov 17, 2016 · US
Leakage current detection circuit, light apparatus comprising the same and leakage current detection method
US-9496703-B2 · Nov 15, 2016 · US
Optoelectronic component device
US-9450505-B2 · Sep 20, 2016 · US
Edge electrode for characterization of semiconductor wafers
US-9442133-B1 · Sep 13, 2016 · US
Problem detection for cable-fed-loads
US-2016252551-A1 · Sep 1, 2016 · US
Method and apparatus for active load impedance monitoring
US-2016187411-A1 · Jun 30, 2016 · US
Single-pole, single current path switching system and method
US-2016133414-A1 · May 12, 2016 · US
Cleaning and motor heating electromagnetic motor control switching
US-2016134224-A1 · May 12, 2016 · US
Wellness monitoring of electromagnetic switching devices
US-2016131712-A1 · May 12, 2016 · US
Apparatus and method for detecting disconnnection of lamps
US-2016129829-A1 · May 12, 2016 · US
Intelligent timed electromagnetic switching
US-2016133411-A1 · May 12, 2016 · US
Trailer light diagnostic device
US-2016121792-A1 · May 5, 2016 · US
Apparatus and method of LED short detection
US-9329243-B2 · May 3, 2016 · US
Electrical Phase Identification
US-2016109497-A1 · Apr 21, 2016 · US
Method and apparatus for testing light-emitting device
US-9316687-B2 · Apr 19, 2016 · US
Organic light emitting display panel
US-9262952-B2 · Feb 16, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01R31/44?
- CPC G01R31/44 is the Cooperative Patent Classification code for “Testing lamps.”
- How many patents are filed under CPC G01R31/44 (Testing lamps)?
- Our database includes 626 publications tagged with this CPC code.
- Is patent activity under CPC G01R31/44 growing?
- Publication counts under this code: 24 in 2024 vs 12 in 2025 (latest complete years).