Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00

Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00 · 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 codeH04L23/00
Official titleApparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
Display labelApparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
Total patents105

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201528
201614
20179
201817
201916
20207
20214
20222
20234
20241
20253

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 H04L23/00?
CPC H04L23/00 is the Cooperative Patent Classification code for “Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00.”
How many patents are filed under CPC H04L23/00 (Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00)?
Our database includes 105 publications tagged with this CPC code.
Is patent activity under CPC H04L23/00 growing?
Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).