DIFF Main Group
B23B 3/00 General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
Introduced: September 1968
Of 10 combined children, 9 exist in both systems.
1 codes exist only in IPC.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B23B 3/02 Small lathes, e.g. for toolmakers (specially designed for watchmakers G04D3/00) IPC+CPC Available in IPC and CPC
- B23B 3/04 Turning-machines in which the workpiece is rotated by means at a distance from the headstock IPC+CPC Available in IPC and CPC
- B23B 3/06 Turning-machines or devices characterised only by the special arrangement of constructional units (B23Q37/00 takes precedence; such features of general applicability B23Q) +1 CPC IPC+CPC Available in IPC and CPC
- B23B 3/16 Turret lathes for turning individually-chucked workpieces +3 CPC −2 IPC IPC+CPC Available in IPC and CPC
- B23B 3/28 Turning-machines in which the feed is controlled by a copying device, i.e. copying lathes IPC only IPC only
- B23B 3/30 Turning-machines with two or more working-spindles, e.g. in fixed arrangement IPC+CPC Available in IPC and CPC
- B23B 3/34 Short turning-machines with one or multiple working-spindles attended from the end (B23B3/12 takes precedence) IPC+CPC Available in IPC and CPC
- B23B 3/36 Associations of only turning-machines directed to a particular metal-working result (if the metal-working result is not essential B23Q39/00) 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