CPC Subgroup
B27B 17/144 Full Title
Chain saws; Equipment therefor > Arrangements for stretching the chain saw
Filing statistics
CPC B27B 17/144 belongs to the parent subclass B27B, which recorded 11,434 patent applications worldwide between 2013 and 2023. Annual filings declined from 826 in 2013 to 729 in 2023 (-12%), peaking at 1,371 applications in 2020. The most active applicants in class B27 are ROBERT BOSCH (868 applications), NANJING FORESTRY UNIVERSITY (463 applications) and HOMAG (437 applications).
Source: EPO PATSTAT, worldwide filings
Top Applicants
Top 10 applicants by patent filingsfor 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