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CPC Subgroup
H04R 11/08

Gramophone pick-ups using a stylus; Recorders using a stylus

Full Title

Transducers of moving-armature or moving-core type (acoustic diaphragm of magnetisable material directly coacting with electromagnet H04R13/00) > Gramophone pick-ups using a stylus; Recorders using a stylus

2 direct subcodes

Child Classifications

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  • H04R 11/10 comprising two or more styli or transducers (H04R11/12 takes precedence)
  • H04R 11/12 signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Top Applicants

Top 10 applicants by patent filingsfor 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