DIFF Main Group
B23C 3/00 Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, )
Introduced: September 1968
Title
Titles differ between systems:
IPC: Milling particular work; Special milling operations; Machines therefor
CPC: Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, )
Full Title
Full titles differ between systems:
IPC:
Milling particular work; Special milling operations; Machines therefor
CPC:
Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, )
Of 15 combined children, 13 exist in both systems.
2 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B23C 3/02 Milling surfaces of revolution (B23C3/06, B23C3/08 take precedence) +1 CPC IPC+CPC Available in IPC and CPC
- B23C 3/12 Trimming or finishing edges, e.g. deburring welded corners +3 CPC IPC+CPC Available in IPC and CPC
- B23C 3/22 Forming overlapped joints, e.g. of the ends of piston-rings IPC+CPC Available in IPC and CPC
- B23C 3/24 Making square or polygonal ends on workpieces, e.g. key studs on tools IPC+CPC Available in IPC and CPC
- B23C 3/26 Making square or polygonal holes in workpieces, e.g. key holes in tools IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B23,2013–2023, worldwide · Source: EPO PATSTAT
- ITW (ILLINOIS TOOL WORKS) US 3,407
- FANUC JP 3,120
- DISCO ABRASIVE SYSTEM 2,777
- HAN'S LASER TECHNOLOGY INDUSTRY GROUP COMPANY 2,629
- ROBERT BOSCH DE 2,468
- FANUC 2,273
- DISCO CORPORATION JP 2,267
- GE (GENERAL ELECTRIC COMPANY) US 1,611
- CHINESE ACADEMY OF SCIENCES 1,534
- ISCAR IL 1,499
Top Applicants (CPC)
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