Electronic Component, Method for Producing Same, and Sealing Material Paste Used in Same
US-2017301883-A1 · Oct 19, 2017 · US
Light-sensitive devices
Light-sensitive devices · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01G9/20 |
| Official title | Light-sensitive devices |
| Display label | Light-sensitive devices |
| Total patents | 315 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 28 |
| 2017 | 37 |
| 2018 | 40 |
| 2019 | 53 |
| 2020 | 18 |
| 2021 | 24 |
| 2022 | 30 |
| 2023 | 27 |
| 2024 | 14 |
| 2025 | 12 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Photochemical reaction device
US-9708717-B2 · Jul 18, 2017 · US
Photoelectric conversion element, dye-sensitized solar cell, and dye-sensitized solar cell module
US-2017040119-A1 · Feb 9, 2017 · US
Perovskite and other solar cell materials
US-9530972-B2 · Dec 27, 2016 · US
Photoelectrochemical reaction system
US-2016369409-A1 · Dec 22, 2016 · US
Attachment of Graphene and Metal or Metal Oxide-Modified Graphene to Organic Polymers Used in Organic Fuel Cells
US-2016359183-A1 · Dec 8, 2016 · US
Power storage system and power storage method
US-2016329737-A1 · Nov 10, 2016 · US
Water electrolysis system
US-2016281241-A1 · Sep 29, 2016 · US
Dye-sensitized solar cell
US-2016276609-A1 · Sep 22, 2016 · US
Electrochemical device
US-2016276110-A1 · Sep 22, 2016 · US
Hole transport material
US-2016254449-A1 · Sep 1, 2016 · US
Battery Apparatus and Electronic Device
US-2016254575-A1 · Sep 1, 2016 · US
Perovskite and other solar cell materials
US-2016248027-A1 · Aug 25, 2016 · US
Perovskite and other solar cell materials
US-2016240805-A1 · Aug 18, 2016 · US
Electrochemical and photoelectrochemical reduction of furfurals
US-2016237576-A1 · Aug 18, 2016 · US
Perovskite and other solar cell materials
US-2016240796-A1 · Aug 18, 2016 · US
Electrode body for solar cell, method for producing the electrode body, and solar cell provided with the electrode body
US-9419234-B2 · Aug 16, 2016 · US
Method for fabricating single-crystalline niobium oxynitride film and method for generating hydrogen using single-crystalline niobium oxynitride film
US-2016201218-A1 · Jul 14, 2016 · US
Chemical reaction device
US-2016186342-A1 · Jun 30, 2016 · US
Method of forming rigid imide material from soluble amide ester functionalized precursors
US-9355787-B2 · May 31, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01G9/20?
- CPC H01G9/20 is the Cooperative Patent Classification code for “Light-sensitive devices.”
- How many patents are filed under CPC H01G9/20 (Light-sensitive devices)?
- Our database includes 315 publications tagged with this CPC code.
- Is patent activity under CPC H01G9/20 growing?
- Publication counts under this code: 14 in 2024 vs 12 in 2025 (latest complete years).