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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

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  • 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

  1. QUALCOMM US 97,396
  2. HUAWEI TECHNOLOGIES COMPANY CN 96,502
  3. SAMSUNG ELECTRONICS COMPANY KR 86,981
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
  5. HUAWEI TECHNOLOGIES COMPANY 55,349
  6. LG ELECTRONICS KR 53,649
  7. CANON 33,341
  8. SONY CORPORATION JP 32,761
  9. ZTE CORPORATION CN 32,274
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327