Non-electrical signal transmission systems, e.g. optical systems

Introduced: September 1968

Title

Titles differ between systems:

IPC: Non-electric signal transmission systems, e.g. optical systems

CPC: Non-electrical signal transmission systems, e.g. optical systems

Full titles differ between systems:

IPC:

Non-electric signal transmission systems, e.g. optical systems

CPC:

Non-electrical signal transmission systems, e.g. optical systems

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1995.

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G08C 23/02 using infrasonic, sonic or ultrasonic waves since 1995 IPC+CPC Available in IPC and CPC
G08C 23/04 using light waves, e.g. infrared since 1995 IPC+CPC Available in IPC and CPC
G08C 23/06 through light guides, e.g. optical fibres since 1995 IPC+CPC Available in IPC and CPC

Class G08,2013–2023, worldwide · Source: EPO PATSTAT

Class G08,2013–2023, worldwide · Source: EPO PATSTAT