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PCE
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DIFF Subgroup
H04L 17/16

Apparatus or circuits at the receiving end

Introduced: September 1968

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

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

Child Classifications

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  • H04L 17/18 Code selection mechanisms IPC+CPC Available in IPC and CPC
  • H04L 17/20 using perforating recorders IPC+CPC Available in IPC and CPC
  • H04L 17/22 using mechanical translation and type-bar printing IPC+CPC Available in IPC and CPC
  • H04L 17/24 using mechanical translation and type-head printing, e.g. type-wheel, type-cylinder IPC+CPC Available in IPC and CPC
  • H04L 17/26 using aggregate motion translation IPC+CPC Available in IPC and CPC
  • H04L 17/28 using pneumatic or hydraulic translation IPC+CPC Available in IPC and CPC
  • H04L 17/30 using electric or electronic translation IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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

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