Ground-based stations (H04B7/204 takes precedence)

Introduced: July 1974

Title

Titles differ between systems:

IPC: Ground-based stations

CPC: Ground-based stations (H04B7/204 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Radio transmission systems, i.e. using radiation field > Relay systems > Active relay systems > Ground-based stations

CPC:

Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence) > Relay systems > Active relay systems > Ground-based stations (H04B7/204 takes precedence)

CPC subdivides this area 4x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

IPC defines codes here since 1974.

Child Classifications

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H04B 7/15507 +1 CPC CPC only CPC only
H04B 7/15521 CPC only CPC only
H04B 7/15528 +3 CPC CPC only CPC only
H04B 7/15557 CPC only CPC only
H04B 7/15564 +3 CPC CPC only CPC only
H04B 7/15592 CPC only CPC only
H04B 7/165 employing angle modulation since 1974 IPC+CPC Available in IPC and CPC
H04B 7/17 employing pulse modulation, e.g. pulse code modulation since 1974 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