DIFF Subgroup
B27K 5/06 Softening or hardening of wood
Introduced: September 1968
Title
Titles differ between systems:
IPC: Softening or hardening wood
CPC: Softening or hardening of wood
Full Title
Full titles differ between systems:
IPC:
Staining or dyeing wood; Bleaching wood; Treating of wood not provided for in groups or > Softening or hardening wood
CPC:
Treating of wood not provided for in groups B27K1/00, B27K3/00 > Softening or hardening of wood
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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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