Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
B23B 5/00

Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor

Introduced: September 1968

Of 11 combined children, 10 exist in both systems.

1 codes exist only in IPC.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

  • B23B 5/02 for turning hubs or brake drums (B23B5/04 takes precedence) IPC+CPC Available in IPC and CPC
  • B23B 5/04 for reconditioning hubs or brake drums or axle spindles without removing same from the vehicle IPC+CPC Available in IPC and CPC
  • B23B 5/06 for turning valves or valve bodies IPC+CPC Available in IPC and CPC
  • B23B 5/14 Cutting-off lathes ( shearing B23D) IPC+CPC Available in IPC and CPC
  • B23B 5/24 for turning pistons or other workpieces to a slightly non-circular cross-section IPC only IPC only
  • B23B 5/26 for simultaneously turning internal and external surfaces of a body 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