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DIFF Subgroup
B27H 5/12

Making bungs from wood; Drilling or reaming bung holes

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Manufacture of tubs, coops or barrels > Finishing barrels, e.g. cutting grooves > Making bungs from wood; Drilling or reaming bung holes

CPC:

Manufacture of tubes, coops, or barrels (from veneer strips or sheets B27D1/00) > Finishing barrels, e.g. cutting grooves > Making bungs from wood; Drilling or reaming bung holes

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class B27,2013–2023, worldwide · Source: EPO PATSTAT

  1. NANJING FORESTRY UNIVERSITY 960
  2. ROBERT BOSCH DE 762
  3. HOMAG DE 384
  4. HARBIN ARTS AND CRAFTS COMPANY 350
  5. NORTHEAST FORESTRY UNIVERSITY 343
  6. SWISS KRONO TEC CH 304
  7. MAKITA CORPORATION 298
  8. DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 296
  9. VAELINGE INNOVATION SE 287
  10. HUSQVARNA SE 282

Top Applicants (CPC)

Class B27,2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 868
  2. NANJING FORESTRY UNIVERSITY 463
  3. HOMAG DE 437
  4. HUSQVARNA SE 360
  5. SWISS KRONO TEC CH 350
  6. MAKITA CORPORATION JP 319
  7. DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 312
  8. VAELINGE INNOVATION SE 306
  9. ANDREAS STIHL & COMPANY DE 275
  10. FESTOOL DE 260