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CPC Subgroup
E03F 5/08

Ventilation of sewers

Full Title

Sewerage structures > Ventilation of sewers

Filing statistics

CPC E03F 5/08 belongs to the parent subclass E03F, which recorded 35,221 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,491 in 2013 to 3,653 in 2023 (+145%), peaking at 5,159 applications in 2020. The most active applicants in class E03 are NEOPERL (934 applications), GROHE (870 applications) and TOTO (646 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class E03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. NEOPERL DE 934
  2. GROHE DE 870
  3. TOTO 646
  4. GEBERIT INTERNATIONAL CH 629
  5. KOHLER COMPANY US 621
  6. TOTO JP 590
  7. LIXIL CORPORATION JP 429
  8. AS AMERICA US 324
  9. HANSGROHE SE DE 314
  10. LIXIL CORPORATION 307