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PCE
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DIFF Subgroup
B23B 5/18

for turning crankshafts, eccentrics, or cams, e.g. crankpin lathes

Introduced: September 1968

Full Title

Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor > for turning crankshafts, eccentrics, or cams, e.g. crankpin lathes

Of 2 combined children, 1 exist in both systems.

1 codes exist only in IPC.

Child Classifications

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  • B23B 5/20 without removing same from the engine IPC+CPC Available in IPC and CPC
  • B23B 5/22 Holding the workpiece in the machine, e.g. chucking devices IPC only IPC only

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