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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 3/28 Turning-machines in which the feed is controlled by a copying device, i.e. copying lathes IPC only IPC only
  • 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

  1. ITW (ILLINOIS TOOL WORKS) US 3,407
  2. FANUC JP 3,120
  3. DISCO ABRASIVE SYSTEM 2,777
  4. HAN'S LASER TECHNOLOGY INDUSTRY GROUP COMPANY 2,629
  5. ROBERT BOSCH DE 2,468
  6. FANUC 2,273
  7. DISCO CORPORATION JP 2,267
  8. GE (GENERAL ELECTRIC COMPANY) US 1,611
  9. CHINESE ACADEMY OF SCIENCES 1,534
  10. ISCAR IL 1,499

Top Applicants (CPC)

Class B23,2013–2023, worldwide · Source: EPO PATSTAT

  1. ITW (ILLINOIS TOOL WORKS) US 3,642
  2. DISCO CORPORATION JP 3,316
  3. FANUC JP 3,111
  4. ROBERT BOSCH DE 2,711
  5. FANUC 2,163
  6. GE (GENERAL ELECTRIC COMPANY) US 2,113
  7. ISCAR IL 1,516
  8. SIEMENS DE 1,459
  9. LINCOLN GLOBAL US 1,433
  10. KOBE STEEL JP 1,423