Systems providing special services or facilities to subscribers (specially adapted for wireless communication networks H04W4/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Systems providing special services or facilities to subscribers

CPC: Systems providing special services or facilities to subscribers (specially adapted for wireless communication networks H04W4/00)

Full Title

Full titles differ between systems:

IPC:

Automatic or semi-automatic exchanges > Systems providing special services or facilities to subscribers

CPC:

Automatic or semi-automatic exchanges > Systems providing special services or facilities to subscribers (specially adapted for wireless communication networks H04W4/00)

CPC subdivides this area 2x more granularly than IPC with 17 additional codes.

17 codes are CPC-only extensions.

5 shared codes have differing titles between IPC and CPC.

Child Classifications

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H04M 3/42008 CPC only CPC only
H04M 3/42017 CPC only CPC only
H04M 3/42025 +2 CPC CPC only CPC only
H04M 3/42127 CPC only CPC only
H04M 3/42136 +4 CPC CPC only CPC only
H04M 3/42187 CPC only CPC only
H04M 3/42195 CPC only CPC only
H04M 3/42204 CPC only CPC only
H04M 3/42212 CPC only CPC only
H04M 3/42221 CPC only CPC only
H04M 3/42229 +3 CPC CPC only CPC only
H04M 3/4228 +3 CPC CPC only CPC only
H04M 3/42314 +3 CPC CPC only CPC only
H04M 3/42348 +1 CPC CPC only CPC only
H04M 3/42365 +1 CPC CPC only CPC only
H04M 3/42382 CPC only CPC only
H04M 3/42391 CPC only CPC only
H04M 3/424 Arrangements for automatic redialling (at the subscriber's set H04M1/27) since 2000 IPC+CPC Available in IPC and CPC
H04M 3/428 Arrangements for placing incoming calls on hold since 2000 +5 CPC IPC+CPC Available in IPC and CPC
H04M 3/432 Arrangements for calling a subscriber at a specific time, e.g. morning call service since 2000 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

HUAWEI TECHNOLOGIES COMPANY CN 101,476
QUALCOMM US 101,139
SAMSUNG ELECTRONICS COMPANY KR 96,655
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
LG ELECTRONICS KR 55,253
HUAWEI TECHNOLOGIES COMPANY 54,181
SONY CORPORATION JP 35,309
ZTE CORPORATION CN 32,950
INTEL CORPORATION US 27,533
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498