Timepiece including a microgenerator and a light source
US-2025251700-A1 · Aug 7, 2025 · US
the power supply being a generator
the power supply being a generator · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F21S9/04 |
| Official title | the power supply being a generator |
| Display label | the power supply being a generator |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 8 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Contactless power generator for powering lights on a propeller
US-12221226-B2 · Feb 11, 2025 · US
Lighted power tool
US-2024375253-A1 · Nov 14, 2024 · US
Lighted power tool
US-2024351175-A1 · Oct 24, 2024 · US
Contactless Power Generator for Powering Lights on a Propeller
US-2024336371-A1 · Oct 10, 2024 · US
Temperature indicator powered by thermoelectric generator
US-12096693-B2 · Sep 17, 2024 · US
Lighted power tool
US-12059780-B2 · Aug 13, 2024 · US
Drone station
US-11999477-B2 · Jun 4, 2024 · US
Hybrid documents
US-2024153933-A1 · May 9, 2024 · US
Mask with sealing indicator
US-2024019117-A1 · Jan 18, 2024 · US
Pneumatic impact with light
US-11806848-B2 · Nov 7, 2023 · US
Temperature indicator powered by thermoelectric generator
US-2023309405-A1 · Sep 28, 2023 · US
Energy autonomous aircraft evacuation slide systems and methods
US-11718415-B2 · Aug 8, 2023 · US
Lighting fixtures and methods of commissioning lighting fixtures
US-11674668-B2 · Jun 13, 2023 · US
Energy autonomous aircraft evacuation slide systems and methods
US-2022388679-A1 · Dec 8, 2022 · US
Lighting fixtures and methods of commissioning lighting fixtures
US-2022299190-A1 · Sep 22, 2022 · US
Methods, apparatus and systems for providing occupancy-based variable lighting
US-11339927-B2 · May 24, 2022 · US
Lighted power tool
US-2022009064-A1 · Jan 13, 2022 · US
Elevator alert system
US-11053095-B2 · Jul 6, 2021 · US
Drone station
US-2021163135-A1 · Jun 3, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F21S9/04?
- CPC F21S9/04 is the Cooperative Patent Classification code for “the power supply being a generator.”
- How many patents are filed under CPC F21S9/04 (the power supply being a generator)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F21S9/04 growing?
- Publication counts under this code: 8 in 2024 vs 2 in 2025 (latest complete years).