using a call-back technique via a telephone network

using a call-back technique via a telephone network · Cooperative Patent Classification (CPC)

Computing, optics, measurement, and control technologies.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeG06F21/313
Official title{using a call-back technique via a telephone network}
Display labelusing a call-back technique via a telephone network
Total patents106

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
20159
20168
201710
20188
201915
202014
20216
20227
202313
202412
20252
20262

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 G06F21/313?
CPC G06F21/313 is the Cooperative Patent Classification code for “using a call-back technique via a telephone network.”
How many patents are filed under CPC G06F21/313 (using a call-back technique via a telephone network)?
Our database includes 106 publications tagged with this CPC code.
Is patent activity under CPC G06F21/313 growing?
Publication counts under this code: 12 in 2024 vs 2 in 2025 (latest complete years).