G08C TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
Introduced: September 1968
Last revised: January 1985
Classification Context
- Section:
- PHYSICS
- Class:
- SIGNALLING
- Subclass:
- TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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.
Filing statistics
IPC subclass G08C recorded 103,496 patent applications worldwide between 2013 and 2023. Annual filings declined from 7,229 in 2013 to 4,700 in 2023 (-35%), peaking at 13,211 applications in 2020. The most active applicants in class G08 are TOYOTA MOTOR CORPORATION (6,781 applications), SGCC(STATE GRID CORPORATION OF CHINA) (5,954 applications) and ROBERT BOSCH (3,656 applications).
Source: EPO PATSTAT, worldwide filings
In class comparison
G08C ranks 3rd of 3 subclasses with filings in G08, with 103,496 applications between 2013 and 2023, 16.5% of the class. Annual filings declined 35% from 2013 to 2023, below the class as a whole (+86%).
| Rank | Subclass | Title | Applications | Share |
|---|---|---|---|---|
| 1 | G08B, Signalling Systems, e.g. Personal Calling Systems; Order Telegraphs; Alarm Systems | Signalling Systems, e.g. Personal Calling Systems; Order Telegraphs; Alarm Systems | 306,319 | 48.8% |
| 2 | G08G, Traffic Control Systems | Traffic Control Systems | 217,850 | 34.7% |
| 3 | G08C | Transmission Systems for Measured Values, Control or Similar Signals | 103,496 | 16.5% |
Source: EPO PATSTAT, worldwide filings
Additional Content
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
Related Keywords
7 direct subcodes
Child Classifications
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- G08C 13/00 Arrangements for influencing the relationship between signals at input and output, e.g. differentiating, delaying
- G08C 15/00 Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
- G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C 19/00 Electric signal transmission systems
- G08C 21/00 Systems for transmitting the position of an object with respect to a predetermined reference system, e.g. tele-autographic system
- G08C 23/00 Non-electric signal transmission systems, e.g. optical systems
- G08C 25/00 Arrangements for preventing or correcting errors; Monitoring arrangements
Top Applicants
Top 10 applicants by patent filingsfor 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