IPC Main Group
H04N 11/00 Colour television systems
Introduced: January 1985
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
Additional Content
Limiting references
Details of colour television systems
Application references
Stereoscopic colour television systems
Related Keywords
COLOUR(S) television systems
4 direct subcodes
Child Classifications
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- H04N 11/02 with bandwidth reduction
- H04N 11/04 using pulse code modulation
- H04N 11/06 Transmission systems characterised by the manner in which the individual colour picture signal components are combined
- H04N 11/24 High-definition television systems
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 97,396
- HUAWEI TECHNOLOGIES COMPANY CN 96,502
- SAMSUNG ELECTRONICS COMPANY KR 86,981
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
- HUAWEI TECHNOLOGIES COMPANY 55,349
- LG ELECTRONICS KR 53,649
- CANON 33,341
- SONY CORPORATION JP 32,761
- ZTE CORPORATION CN 32,274
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327