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CPC Subgroup
F42D 1/08

Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor

Full Title

Blasting methods or apparatus, e.g. loading or tamping > Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor

7 direct subcodes

Child Classifications

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  • F42D 1/10 Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
  • F42D 1/12 Feeding tamping material by pneumatic or hydraulic pressure
  • F42D 1/18 Plugs for boreholes
  • F42D 1/20 Tamping cartridges, i.e. cartridges containing tamping material (flexible or deformable blasting cartridges F42B3/087)
  • F42D 1/22 Methods for holding or positioning for blasting cartridges or tamping cartridges

Top Applicants

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

  1. DETNET SOUTH AFRICA ZA 478
  2. RHEINMETALL WAFFE MUNITION DE 462
  3. BAE SYSTEMS GB 439
  4. RAYTHEON COMPANY US 404
  5. HANWHA CORPORATION KR 388
  6. AGENCY FOR DEFENSE DEVELOPMENT KR 352
  7. BEIJING INSTITUTE OF TECHNOLOGY 294
  8. TRUE VELOCITY IP HOLDINGS US 269
  9. NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY 226
  10. BAE SYSTEMS BOFORS SE 222