Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup
H04B 15/04

the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder

Full Title

Suppression or limitation of noise or interference (by means associated with receiver H04B1/10) > Reducing interference from electric apparatus by means located at or near the interfering apparatus > the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder

Filing statistics

CPC H04B 15/04 belongs to the parent subclass H04B, which recorded 474,755 patent applications worldwide between 2013 and 2023. Annual filings grew from 34,313 in 2013 to 39,995 in 2023 (+17%), peaking at 50,387 applications in 2020. The most active applicants in class H04 are HUAWEI TECHNOLOGIES COMPANY (101,476 applications), QUALCOMM (101,139 applications) and SAMSUNG ELECTRONICS COMPANY (96,655 applications).

Source: EPO PATSTAT, worldwide filings

1 direct subcode

Child Classifications

Navigate with arrow keys, Enter to open

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