G08C TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmitting systems F15B; mechanical means for transferring the output of a sensing member into a different variable G01D5/00; mechanical control systems G05G)
Introduced: September 1968
Description
G08C covers transmission systems and signal transmission methods for conveying measured values, control signals, and similar information between remote locations or devices. This subclass encompasses both wired and wireless transmission technologies, including signal encoding/modulation techniques, transmission protocols, and infrastructure for telemetry, remote control, and data communication in measurement and control applications. Typical technologies include analog signal transmission, frequency modulation systems, pulse code modulation, and wireless transmission methods for industrial, utility, and automation systems. This classification excludes general data transmission and telecommunications systems covered by H03 and H04, focusing instead on applications where signal transmission is integral to measurement acquisition or remote control functionality.
Title
Titles differ between systems:
IPC: TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
CPC: TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmitting systems F15B; mechanical means for transferring the output of a sensing member into a different variable G01D5/00; mechanical control systems G05G)
Full Title
Full titles differ between systems:
TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmitting systems F15B; mechanical means for transferring the output of a sensing member into a different variable G01D5/00; mechanical control systems G05G)
Additional Content IPC
Glossary
transmission transmissions the dispatching, for reception elsewhere, of a signal, message or other form of information tele-autographic system tele-autographic systems system which transmits the handwriting wireless relating to a system of communication that does not use hardwired connections
Limiting references
Fluid pressure transmission systems Mechanical means for transferring the output of a sensing member Mechanical control systems
Application references
Devices for measuring tyre pressure or temperature, specially adapted for vehicles mounted on the wheel or tyre Means for transmitting measuring-signals from a borehole or a well to the surface e.g. for logging while drilling Transmitting seismic signals to recording or processing apparatus Radiosondes for meteorological purposes Signalling or calling systems Order telegraph systems
Of 9 combined children, 7 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G08C 13/00 Arrangements for influencing the relationship between signals at input and output, e.g. differentiating, delaying IPC+CPC Available in IPC and CPC
- G08C 15/00 Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path IPC+CPC Available in IPC and CPC
- G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link IPC+CPC Available in IPC and CPC
- G08C 19/00 Electric signal transmission systems (G08C17/00 takes precedence) IPC+CPC Available in IPC and CPC
- G08C 21/00 Systems for transmitting the position of an object with respect to a predetermined reference system, e.g. tele-autographic system IPC+CPC Available in IPC and CPC
- G08C 2200/00 Transmission systems for measured values, control or similar signals 2nd only CPC only CPC only
- G08C 2201/00 Transmission systems of control signals via wireless link 2nd only +8 CPC CPC only CPC only
- G08C 23/00 Non-electrical signal transmission systems, e.g. optical systems IPC+CPC Available in IPC and CPC
- G08C 25/00 Arrangements for preventing or correcting errors; Monitoring arrangements IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G08,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 6,781
- SGCC(STATE GRID CORPORATION OF CHINA) 5,954
- ROBERT BOSCH DE 3,656
- DENSO CORPORATION 3,452
- HONDA MOTOR COMPANY 2,945
- DENSO CORPORATION JP 2,562
- HONEYWELL INTERNATIONAL US 2,517
- TOYOTA MOTOR CORPORATION JP 2,435
- FORD GLOBAL TECHNOLOGIES US 2,239
- PANASONIC INTELLECTUAL PROPERTY 2,119
Top Applicants (CPC)
Class G08,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 3,999
- TOYOTA MOTOR CORPORATION 3,488
- TOYOTA MOTOR CORPORATION JP 3,377
- FORD GLOBAL TECHNOLOGIES US 3,103
- DENSO CORPORATION JP 2,964
- HONEYWELL INTERNATIONAL US 2,873
- HYUNDAI MOTOR COMPANY KR 2,343
- NISSAN MOTOR COMPANY JP 2,265
- SGCC(STATE GRID CORPORATION OF CHINA) 2,247
- SAMSUNG ELECTRONICS COMPANY KR 2,132