CPC Subgroup
H04L 17/16 Apparatus or circuits at the receiving end
Full Title
Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code > Apparatus or circuits at the receiving end
7 direct subcodes
Child Classifications
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- H04L 17/18 Code selection mechanisms
- H04L 17/20 using perforating recorders
- H04L 17/22 using mechanical translation and type-bar printing
- H04L 17/24 using mechanical translation and type-head printing, e.g. type-wheel, type-cylinder
- H04L 17/26 using aggregate motion translation
- H04L 17/28 using pneumatic or hydraulic translation
- H04L 17/30 using electric or electronic translation
Top Applicants
Top 10 applicants by patent filingsfor 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