Photoelectron source, multi-photoelectron source and multi-beam irradiation apparatus
US-2025253141-A1 · Aug 7, 2025 · US
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using electromagnetic means only
using electromagnetic means only · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01J3/22 |
| Official title | using electromagnetic means only |
| Display label | using electromagnetic means only |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.