IPC Subgroup
H04L 17/16 Apparatus or circuits at the receiving end
Introduced: September 1968
Last revised: January 2006
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
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H04L 17/18 Code selection mechanisms
- H04L 17/2 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 17/3 using electric or electronic translation
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