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Secondary emission electrodes

Secondary emission electrodes · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH01J2201/32
Official titleSecondary emission electrodes
Display labelSecondary emission electrodes
Total patents4

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity appears stable based on the most recent years.

Patents filed per year
YearPatents
20181
20191
20211
20221

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.