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PCE
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CPC Subgroup
H04R 19/10

signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Full Title

Electrostatic transducers > Gramophone pick-ups using a stylus; Recorders using a stylus (H04R19/01 takes precedence) > 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