Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices (variable for purpose of altering directivity H01Q3/00; arrangements of such devices for guiding waves H01P3/20; variable for purpose of modulation H03C7/02)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

CPC: Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices (variable for purpose of altering directivity H01Q3/00; arrangements of such devices for guiding waves H01P3/20; variable for purpose of modulation H03C7/02)

Full Title

Full titles differ between systems:

IPC:

Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

CPC:

Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices (variable for purpose of altering directivity H01Q3/00; arrangements of such devices for guiding waves H01P3/20; variable for purpose of modulation H03C7/02)

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01Q 15/0006 +5 CPC CPC only CPC only
H01Q 15/02 Refracting or diffracting devices, e.g. lens, prism IPC+CPC Available in IPC and CPC
H01Q 15/14 Reflecting surfaces; Equivalent structures +4 CPC IPC+CPC Available in IPC and CPC
H01Q 15/23 Combinations of reflecting surfaces with refracting or diffracting devices since 1980 IPC+CPC Available in IPC and CPC
H01Q 15/24 Polarising devices; Polarisation filters (H01Q15/12, H01Q15/22 take precedence) +1 CPC IPC+CPC Available in IPC and CPC