Antennas or antenna systems providing at least two radiating patterns (arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Antennas or antenna systems providing at least two radiating patterns

CPC: Antennas or antenna systems providing at least two radiating patterns (arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00)

Full Title

Full titles differ between systems:

IPC:

Antennas or antenna systems providing at least two radiating patterns

CPC:

Antennas or antenna systems providing at least two radiating patterns (arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00)

CPC subdivides this area 4x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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H01Q 25/001 CPC only CPC only
H01Q 25/002 CPC only CPC only
H01Q 25/004 CPC only CPC only
H01Q 25/005 CPC only CPC only
H01Q 25/007 +1 CPC CPC only CPC only
H01Q 25/02 providing sum and difference patterns (H01Q25/04 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
H01Q 25/04 Multimode antennas since 1980 IPC+CPC Available in IPC and CPC