Frequency-division multiplex systems (H04J14/00 takes precedence)

Frequency-division multiplex systems (H04J14/00 takes precedence) · 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 codeH04J1/00
Official titleFrequency-division multiplex systems (H04J14/00 takes precedence)
Display labelFrequency-division multiplex systems (H04J14/00 takes precedence)
Total patents317

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201532
201641
201737
201831
201943
202039
202129
202225
202313
202418
20258
20261

Representative patents

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

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC H04J1/00?
CPC H04J1/00 is the Cooperative Patent Classification code for “Frequency-division multiplex systems (H04J14/00 takes precedence).”
How many patents are filed under CPC H04J1/00 (Frequency-division multiplex systems (H04J14/00 takes precedence))?
Our database includes 317 publications tagged with this CPC code.
Is patent activity under CPC H04J1/00 growing?
Publication counts under this code: 18 in 2024 vs 8 in 2025 (latest complete years).