Filters for transverse electromagnetic waves (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Filters for transverse electromagnetic waves

CPC: Filters for transverse electromagnetic waves (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence)

Full Title

Full titles differ between systems:

IPC:

Auxiliary devices > Frequency-selective devices, e.g. filters > Filters for transverse electromagnetic waves

CPC:

Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Frequency-selective devices, e.g. filters > Filters for transverse electromagnetic waves (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence)

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

Navigate with arrow keys, Enter to open

H01P 1/2013 CPC only CPC only
H01P 1/2016 CPC only CPC only
H01P 1/202 Coaxial filters (cascaded coaxial cavities H01P1/205) since 1980 IPC+CPC Available in IPC and CPC
H01P 1/203 Strip line filters since 1980 +3 CPC IPC+CPC Available in IPC and CPC
H01P 1/205 Comb or interdigital filters; Cascaded coaxial cavities (H01P1/203 takes precedence) since 1980 +2 CPC IPC+CPC Available in IPC and CPC