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IPC Subgroup
F42B 3/188

having radio-frequency filters

Introduced: January 1990

Last revised: January 2006

Full Title

Blasting cartridges, i.e. case and explosive > Initiators therefor > Safety initiators resistant to premature firing by static electricity or stray currents > having radio-frequency filters

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
AMMUNITION; BLASTING
Subclass:
EXPLOSIVE CHARGES, e.g. FOR BLASTING; FIREWORKS; AMMUNITION

Top Applicants

Top 10 applicants by patent filingsfor class F42, 2013–2023, worldwide · Source: EPO PATSTAT

  1. RHEINMETALL WAFFE MUNITION DE 442
  2. DETNET SOUTH AFRICA ZA 440
  3. BAE SYSTEMS GB 422
  4. AGENCY FOR DEFENSE DEVELOPMENT KR 403
  5. HANWHA CORPORATION KR 388
  6. BEIJING INSTITUTE OF TECHNOLOGY 375
  7. RAYTHEON COMPANY US 341
  8. NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY 284
  9. TRUE VELOCITY IP HOLDINGS US 264
  10. ANHUI UNIVERSITY OF SCIENCE & TECHNOLOGY 243