Charging device
US-2025344307-A1 · Nov 6, 2025 · US
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Use of naturally-occurring electricity, {e.g. lightning or static electricity}
Use of naturally-occurring electricity, {e.g. lightning or static electricity} · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H05F7/00 |
| Official title | Use of naturally-occurring electricity, {e.g. lightning or static electricity} |
| Display label | Use of naturally-occurring electricity, {e.g. lightning or static electricity} |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 3 |
| 2020 | 1 |
| 2022 | 2 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydrophobic field
US-12458185-B2 · Nov 4, 2025 · US
Method and apparatus for harvesting a static electric charge
US-11991811-B2 · May 21, 2024 · US
Method for charging a battery
US-11912142-B2 · Feb 27, 2024 · US
Method and apparatus for harvesting a static electric charge
US-2024023222-A1 · Jan 18, 2024 · US
Hydrophobic field
US-2022354320-A1 · Nov 10, 2022 · US
Method for charging a battery
US-2022072964-A1 · Mar 10, 2022 · US
Electrostatic energy collector and electrostatic energy collecting method
US-10790765-B2 · Sep 29, 2020 · US
Apparatuses, methods and systems for active counter directed energy platform protection
US-10057971-B2 · Aug 21, 2018 · US
Electrostatic energy collector and electrostatic energy collecting method
US-2018083553-A1 · Mar 22, 2018 · US
Apparatuses, Methods and Systems for Active Counter Directed Energy Platform Protection
US-2018042094-A1 · Feb 8, 2018 · US
Apparatuses, methods and systems for active counter directed energy platform protection
US-9832850-B2 · Nov 28, 2017 · US
Apparatuses, methods and systems for passive counter-directed energy platform protection
US-9820367-B2 · Nov 14, 2017 · US
System for facilitating cloud formation and cloud precipitation
US-2017055463-A1 · Mar 2, 2017 · US
System for facilitating cloud formation and cloud precipitation
US-9526216-B2 · Dec 27, 2016 · US
Apparatuses, methods and systems for passive counter-directed energy platform protection
US-2016165707-A1 · Jun 9, 2016 · US
Apparatuses, methods and systems for active counter directed energy platform protection
US-2016165706-A1 · Jun 9, 2016 · US
System for harvesting atmospheric electricity
US-9160156-B2 · Oct 13, 2015 · US