Interferometers

Introduced: September 1968

Full Title

Measuring instruments characterised by the use of optical techniques > Interferometers

Of 12 combined children, 6 exist in both systems.

6 codes are CPC-only extensions.

IPC defines codes here since 1974.

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G01B 9/02001 characterised by controlling or generating intrinsic radiation properties since 2022 +4 CPC IPC+CPC Available in IPC and CPC
G01B 9/02015 characterised by the beam path configuration since 2022 +8 CPC IPC+CPC Available in IPC and CPC
G01B 9/02034 +2 CPC CPC only CPC only
G01B 9/02041 +6 CPC CPC only CPC only
G01B 9/02049 +4 CPC CPC only CPC only
G01B 9/02055 Reduction or prevention of errors; Testing; Calibration since 2022 +3 CPC IPC+CPC Available in IPC and CPC
G01B 9/02083 +5 CPC CPC only CPC only
G01B 9/0209 Low-coherence interferometers since 2022 IPC+CPC Available in IPC and CPC
G01B 9/02092 CPC only CPC only
G01B 9/02094 +2 CPC CPC only CPC only
G01B 9/02097 Self-interferometers since 2022 IPC+CPC Available in IPC and CPC
G01B 9/021 using holographic techniques since 1974 IPC+CPC Available in IPC and CPC