DIFF Main Group
B27B 17/00 Chain saws; Equipment therefor
Introduced: September 1968
CPC subdivides this area 2x more granularly than IPC with 7 additional codes.
7 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B27B 17/02 Chain saws equipped with guide bar (B27B17/06 takes precedence) +1 CPC IPC+CPC Available in IPC and CPC
- B27B 17/08 Drives or gearings; Devices for swivelling or tilting the chain saw +2 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B27,2013–2023, worldwide · Source: EPO PATSTAT
- NANJING FORESTRY UNIVERSITY 960
- ROBERT BOSCH DE 762
- HOMAG DE 384
- HARBIN ARTS AND CRAFTS COMPANY 350
- NORTHEAST FORESTRY UNIVERSITY 343
- SWISS KRONO TEC CH 304
- MAKITA CORPORATION 298
- DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 296
- VAELINGE INNOVATION SE 287
- HUSQVARNA SE 282
Top Applicants (CPC)
Class B27,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 868
- NANJING FORESTRY UNIVERSITY 463
- HOMAG DE 437
- HUSQVARNA SE 360
- SWISS KRONO TEC CH 350
- MAKITA CORPORATION JP 319
- DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 312
- VAELINGE INNOVATION SE 306
- ANDREAS STIHL & COMPANY DE 275
- FESTOOL DE 260