IPC Subgroup
H04Q 1/02 Constructional details
Introduced: September 1968
Last revised: January 2006
Full Title
Details of selecting apparatus or arrangements > Constructional details
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- SELECTING
7 direct subcodes
Child Classifications
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- H04Q 1/04 Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
- H04Q 1/06 Cable ducts or mountings specially adapted for exchange installations
- H04Q 1/08 Frames or mounting racks for relays; Accessories therefor
- H04Q 1/1 Exchange station construction
- H04Q 1/12 Arrangements of multiple bars with or without pivotable frames
- H04Q 1/14 Distribution frames
- H04Q 1/16 Wiring arrangements for selector switches or relays in frames
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