Knob assemblies with encoder controlled illumination
US-10147571-B2 · Dec 4, 2018 · US
Light-emitting indicators
Light-emitting indicators · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H19/025 |
| Official title | {Light-emitting indicators} |
| Display label | Light-emitting indicators |
| Total patents | 226 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 10 |
| 2017 | 21 |
| 2018 | 18 |
| 2019 | 22 |
| 2020 | 27 |
| 2021 | 25 |
| 2022 | 25 |
| 2023 | 30 |
| 2024 | 15 |
| 2025 | 13 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Household appliance comprising a knob with illuminated outer periphery
US-2018245795-A1 · Aug 30, 2018 · US
Knob assembly and cooking apparatus including a knob assembly
US-2018239386-A1 · Aug 23, 2018 · US
Input operation device
US-9978540-B2 · May 22, 2018 · US
Laundry treatment apparatus
US-9976244-B2 · May 22, 2018 · US
Switch unit
US-2018130628-A1 · May 10, 2018 · US
Rotary dial assembly
US-2018120578-A1 · May 3, 2018 · US
Operation button and operation device
US-2018115304-A1 · Apr 26, 2018 · US
Optical signaling system for a smart-home device
US-2018094792-A1 · Apr 5, 2018 · US
Rotary-type switch
US-9881752-B2 · Jan 30, 2018 · US
Rotary switching device
US-2018025864-A1 · Jan 25, 2018 · US
Control device for controlling multiple operating characteristics of an electrical load
US-2017354022-A1 · Dec 7, 2017 · US
User interface for a control device
US-2017354012-A1 · Dec 7, 2017 · US
Control device for controlling multiple operating characteristics of an electrical load
US-2017354021-A1 · Dec 7, 2017 · US
User interface for a control device
US-2017354011-A1 · Dec 7, 2017 · US
Input/output device
US-9836141-B2 · Dec 5, 2017 · US
Rotary actuator comprising a homogeneously illuminated display area
US-2017345590-A1 · Nov 30, 2017 · US
Laundry treating apparatus
US-9828719-B2 · Nov 28, 2017 · US
Command selector with rotary scroll wheel
US-9812273-B2 · Nov 7, 2017 · US
Connection module with light display
US-9812821-B2 · Nov 7, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01H19/025?
- CPC H01H19/025 is the Cooperative Patent Classification code for “Light-emitting indicators.”
- How many patents are filed under CPC H01H19/025 (Light-emitting indicators)?
- Our database includes 226 publications tagged with this CPC code.
- Is patent activity under CPC H01H19/025 growing?
- Publication counts under this code: 15 in 2024 vs 13 in 2025 (latest complete years).