Measuring the intensity of spectral lines directly on the spectrum itself (G01J3/42, G01J3/44 take precedence)

Measuring the intensity of spectral lines directly on the spectrum itself (G01J3/42, G01J3/44 take precedence) · 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 codeG01J3/30
Official titleMeasuring the intensity of spectral lines directly on the spectrum itself (G01J3/42, G01J3/44 take precedence)
Display labelMeasuring the intensity of spectral lines directly on the spectrum itself (G01J3/42, G01J3/44 take precedence)
Total patents70

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20156
20167
201710
20184
20198
20207
20216
20226
20234
20244
20258

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 G01J3/30?
CPC G01J3/30 is the Cooperative Patent Classification code for “Measuring the intensity of spectral lines directly on the spectrum itself (G01J3/42, G01J3/44 take precedence).”
How many patents are filed under CPC G01J3/30 (Measuring the intensity of spectral lines directly on the spectrum itself (G01J3/42, G01J3/44 take precedence))?
Our database includes 70 publications tagged with this CPC code.
Is patent activity under CPC G01J3/30 growing?
Publication counts under this code: 4 in 2024 vs 8 in 2025 (latest complete years).