Investigating the spectrum (using colour filters G01J3/51)

Child Classifications

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• G01J 2003/283 2nd only +4 CPC CPC only CPC only
• G01J 2003/2853 2nd only +1 CPC CPC only CPC only
• G01J 2003/2859 2nd only +1 CPC CPC only CPC only
• G01J 2003/2866 2nd only +5 CPC CPC only CPC only
• G01J 2003/2886 2nd only CPC only CPC only
• G01J 2003/2896 2nd only CPC only CPC only
• G01J 3/2803 +4 CPC CPC only CPC only
• G01J 3/2823 +1 CPC CPC only CPC only
• G01J 3/2846 +1 CPC CPC only CPC only
• G01J 3/2889 +1 CPC CPC only CPC only
• G01J 3/30 Measuring the intensity of spectral lines directly on the spectrum itself (G01J3/42, G01J3/44 take precedence) IPC+CPC Available in IPC and CPC
• G01J 3/40 Measuring the intensity of spectral lines by determining density of a photograph of the spectrum; Spectrography (G01J3/42, G01J3/44 take precedence) IPC+CPC Available in IPC and CPC
• G01J 3/42 Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry (beam switching arrangements G01J3/08) +3 CPC IPC+CPC Available in IPC and CPC
• G01J 3/44 Raman spectrometry; Scattering spectrometry +3 CPC IPC+CPC Available in IPC and CPC
• G01J 3/443 Emission spectrometry since 1985 +1 CPC IPC+CPC Available in IPC and CPC
• G01J 3/447 Polarisation spectrometry since 1985 IPC+CPC Available in IPC and CPC
• G01J 3/45 Interferometric spectrometry since 1985 +2 CPC IPC+CPC Available in IPC and CPC
• G01J 3/457 Correlation spectrometry, e.g. of the intensity (G01J3/453 takes precedence) since 1985 IPC+CPC Available in IPC and CPC