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IPC Subgroup
H05F 3/04

by means of spark gaps or other discharge devices

Introduced: September 1968

Last revised: January 2006

Full Title

Carrying-off electrostatic charges > by means of spark gaps or other discharge devices

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Subclass:
STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY

Filing statistics

IPC H05F 3/04 belongs to the parent subclass H05F, which recorded 19,659 patent applications worldwide between 2013 and 2023. Annual filings grew from 615 in 2013 to 3,133 in 2023 (+409%), peaking at 3,200 applications in 2020. The most active applicants in class H05 are SAMSUNG ELECTRONICS COMPANY (7,201 applications), PANASONIC INTELLECTUAL PROPERTY (6,828 applications) and SEMICONDUCTOR ENERGY LABORATORY COMPANY (3,988 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class H05, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 7,201
  2. PANASONIC INTELLECTUAL PROPERTY 6,828
  3. SEMICONDUCTOR ENERGY LABORATORY COMPANY 3,988
  4. LG ELECTRONICS KR 3,564
  5. PANASONIC INTELLECTUAL PROPERTY JP 3,533
  6. SAMSUNG DISPLAY KR 3,310
  7. FUJI JP 2,870
  8. SAMSUNG ELECTRO-MECHANICS COMPANY KR 2,675
  9. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 2,665
  10. MURATA MANUFACTURING COMPANY JP 2,634