Answer-back mechanisms or circuits

Answer-back mechanisms or circuits · 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 codeH04L12/06
Official titleAnswer-back mechanisms or circuits
Display labelAnswer-back mechanisms or circuits
Total patents152

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
20155
201618
201719
201818
201915
202017
202118
202211
202312
202411
20255
20263

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 H04L12/06?
CPC H04L12/06 is the Cooperative Patent Classification code for “Answer-back mechanisms or circuits.”
How many patents are filed under CPC H04L12/06 (Answer-back mechanisms or circuits)?
Our database includes 152 publications tagged with this CPC code.
Is patent activity under CPC H04L12/06 growing?
Publication counts under this code: 11 in 2024 vs 5 in 2025 (latest complete years).