Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools (non-abrasive sharpening devices for scythes, sickles, or the like A01D3/00; sharpening devices designed as components of machines with cutters, see the relevant places for the machines, e.g. A01D75/08, B26D7/12; sharpening of saw teeth B23D63/12; sharpening of files or rasps B23D73/00; grinding of die-stocks or chasers B23G1/36)

Filing statistics

CPC B24B 3/00 belongs to the parent subclass B24B, which recorded 132,872 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,708 in 2013 to 13,782 in 2023 (+141%), peaking at 18,119 applications in 2020. The most active applicants in class B24 are DISCO CORPORATION (2,092 applications), APPLIED MATERIALS (1,813 applications) and EBARA CORPORATION (1,804 applications).

Source: EPO PATSTAT, worldwide filings

12 direct subcodes

Child Classifications

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B24B 3/003
B24B 3/006
B24B 3/02 of milling cutters
B24B 3/16 of broaches
B24B 3/18 of taps or reamers
B24B 3/24 of drills (by fluting the shank B24B19/04)
B24B 3/34 of turning or planing tools or tool bits, e.g. gear cutters (B24B3/36 takes precedence)
B24B 3/36 of cutting blades (B24B3/58 takes precedence)
B24B 3/55 of knife bars for harvesting machines
B24B 3/56 of slicing bands (B24B3/58 takes precedence)
B24B 3/58 of tools having scalloped cutting edges
B24B 3/60 of tools not covered by the preceding subgroups

Top Applicants

Top 10 applicants by patent filingsfor class B24, 2013–2023, worldwide · Source: EPO PATSTAT

DISCO CORPORATION JP 2,092
APPLIED MATERIALS US 1,813
EBARA CORPORATION JP 1,804
3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,329
ROBERT BOSCH DE 863
FUJIMI JP 858
SAINT-GOBAIN ABRASIVES US 833
EBARA CORPORATION 810
SAINT-GOBAIN ABRASIVES FR 782
DISCO ABRASIVE SYSTEM 735