using comparison with reference sources, e.g. disappearing-filament pyrometer

using comparison with reference sources, e.g. disappearing-filament pyrometer · 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 codeG01J5/52
Official titleusing comparison with reference sources, e.g. disappearing-filament pyrometer
Display labelusing comparison with reference sources, e.g. disappearing-filament pyrometer
Total patents81

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
20156
20162
20176
20182
20197
20208
20217
202212
202310
202414
20255
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 G01J5/52?
CPC G01J5/52 is the Cooperative Patent Classification code for “using comparison with reference sources, e.g. disappearing-filament pyrometer.”
How many patents are filed under CPC G01J5/52 (using comparison with reference sources, e.g. disappearing-filament pyrometer)?
Our database includes 81 publications tagged with this CPC code.
Is patent activity under CPC G01J5/52 growing?
Publication counts under this code: 14 in 2024 vs 5 in 2025 (latest complete years).