CPC Subgroup Additional Only
B23B 2251/241 Cross sections of the diameter of the drill
Full Title
Details of tools for drilling machines > Overall form of drilling tools > Cross sections of the diameter of the drill
3 direct subcodes
Child Classifications
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- B23B 2251/242 increasing in a direction towards the shank from the tool tip
- B23B 2251/244 decreasing in a direction towards the shank from the tool tip
- B23B 2251/245 Variable cross sections
Top Applicants
Top 10 applicants by patent filingsfor class B23, 2013–2023, worldwide · Source: EPO PATSTAT
- ITW (ILLINOIS TOOL WORKS) US 3,642
- DISCO CORPORATION JP 3,316
- FANUC JP 3,111
- ROBERT BOSCH DE 2,711
- FANUC 2,163
- GE (GENERAL ELECTRIC COMPANY) US 2,113
- ISCAR IL 1,516
- SIEMENS DE 1,459
- LINCOLN GLOBAL US 1,433
- KOBE STEEL JP 1,423