Watch case comprising a near-field communication device
US-12353174-B2 · Jul 8, 2025 · US
Tuning or receiving; Circuits therefor
Tuning or receiving; Circuits therefor · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G04R20/28 |
| Official title | Tuning or receiving; Circuits therefor |
| Display label | Tuning or receiving; Circuits therefor |
| Total patents | 27 |
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 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Radio-controlled timepiece, system, and method for controlling radio-controlled timepiece
US-12019409-B2 · Jun 25, 2024 · US
Timepiece, control method for change of time, and storage medium
US-11703812-B2 · Jul 18, 2023 · US
Watch case comprising a near-field communication device
US-2022171345-A1 · Jun 2, 2022 · US
Method for setting a quartz watch
US-11243499-B2 · Feb 8, 2022 · US
Radio-Controlled Timepiece, System, And Method For Controlling Radio-Controlled Timepiece
US-2021247724-A1 · Aug 12, 2021 · US
Time Correction Method, And Time Correction System
US-2021157279-A1 · May 27, 2021 · US
Communication device, electronic timepiece, communication method, and recording medium
US-10996636-B2 · May 4, 2021 · US
Hardware centralized time synchronization hub for an autonomous driving vehicle
US-10788841-B2 · Sep 29, 2020 · US
Timepiece, control method for change of time, and storage medium
US-2020103832-A1 · Apr 2, 2020 · US
Hardware centralized time synchronization hub for an autonomous driving vehicle
US-2020064859-A1 · Feb 27, 2020 · US
Wireless communication device, electronic watch, wireless communication method, and non-transitory recording medium
US-10511949-B2 · Dec 17, 2019 · US
Wireless communication device, electronic watch, wireless communication method, and non-transitory recording medium
US-10477373-B2 · Nov 12, 2019 · US
Wireless communication device, electronic watch, wireless communication method, and non-transitory recording medium
US-2019289449-A1 · Sep 19, 2019 · US
Indicators for external variables consisting of singular and multiple depletion cells
US-2019243313-A1 · Aug 8, 2019 · US
Indicators for external variables consisting of singular and multiple depletion cells
US-10338537-B2 · Jul 2, 2019 · US
Communication device, electronic timepiece, time correcting method and recording medium
US-10324422-B2 · Jun 18, 2019 · US
Communication device, electronic timepiece, communication method, and recording medium
US-2018267484-A1 · Sep 20, 2018 · US
Wireless communication device, electronic watch, wireless communication method, and non-transitory recording medium
US-2018270637-A1 · Sep 20, 2018 · US
Method for setting a quartz watch
US-2018267478-A1 · Sep 20, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G04R20/28?
- CPC G04R20/28 is the Cooperative Patent Classification code for “Tuning or receiving; Circuits therefor.”
- How many patents are filed under CPC G04R20/28 (Tuning or receiving; Circuits therefor)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC G04R20/28 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).