Light detection device
US-2021396579-A1 · Dec 23, 2021 · US
using photoemissive or photovoltaic cells
using photoemissive or photovoltaic cells · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01J5/28 |
| Official title | using photoemissive or photovoltaic cells |
| Display label | using photoemissive or photovoltaic cells |
| Total patents | 100 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 10 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 14 |
| 2021 | 13 |
| 2022 | 4 |
| 2023 | 10 |
| 2024 | 10 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Infrared detection apparatus
US-11204282-B2 · Dec 21, 2021 · US
High temperature near-field probe for sensing and energy harvesting applications based upon thermal emission
US-2021325241-A1 · Oct 21, 2021 · US
Control unit for a battery system
US-11106782-B2 · Aug 31, 2021 · US
Methods and apparatuses for measuring optical radiation
US-11073421-B2 · Jul 27, 2021 · US
Exponential Model Based Uncooled Infrared Focal Plane Array Readout Circuit
US-2021048340-A1 · Feb 18, 2021 · US
Photodiode having quantum dot light absorption layer
US-10923612-B2 · Feb 16, 2021 · US
Radiation detector and method for manufacturing a radiation detector
US-10900841-B2 · Jan 26, 2021 · US
A method and system to detect and quantify daylight that employs non-photo sensors
US-2021022226-A1 · Jan 21, 2021 · US
Photodiode having an aluminum metal ohmic contact and a spinel oxide layer
US-10892369-B2 · Jan 12, 2021 · US
Infrared detection apparatus
US-2020378833-A1 · Dec 3, 2020 · US
Photodiode having quantum dot light absorption layer
US-2020365749-A1 · Nov 19, 2020 · US
Photodiode having an aluminum metal ohmic contact and a spinel oxide layer
US-2020365750-A1 · Nov 19, 2020 · US
Detector device with photoconductive body
US-10830696-B2 · Nov 10, 2020 · US
Removal of interference of absorbers from intensity data
US-10798315-B2 · Oct 6, 2020 · US
Photodiode with spinel oxide photoactive layer
US-10770605-B2 · Sep 8, 2020 · US
Removal of Interference of Absorbers from Intensity Data
US-2020280687-A1 · Sep 3, 2020 · US
Proximity sensor having substrate including light sensing area and temperature sensing area
US-10749066-B2 · Aug 18, 2020 · US
Plasmon-enhanced below bandgap photoconductive terahertz generation and detection
US-10680124-B2 · Jun 9, 2020 · US
Spectral conversion element for electromagnetic radiation
US-10612979-B2 · Apr 7, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01J5/28?
- CPC G01J5/28 is the Cooperative Patent Classification code for “using photoemissive or photovoltaic cells.”
- How many patents are filed under CPC G01J5/28 (using photoemissive or photovoltaic cells)?
- Our database includes 100 publications tagged with this CPC code.
- Is patent activity under CPC G01J5/28 growing?
- Publication counts under this code: 10 in 2024 vs 10 in 2025 (latest complete years).