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CPC Main Group Additional Only
B23B 2233/00

Details of centres or drivers

8 direct subcodes

Child Classifications

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  • B23B 2233/04 Means to allow the facing of the axial end of the workpiece near the axis of rotation
  • B23B 2233/08 Centres or drivers comprising a ball
  • B23B 2233/12 Centres or drivers with a special arrangement of bearings or with special bearings
  • B23B 2233/16 Centres or drivers comrprising chucks
  • B23B 2233/20 Centres or drivers with convex surfaces
  • B23B 2233/24 Centres or drivers with inserts
  • B23B 2233/28 Centres or drivers supporting the workpiece at three points around the circumference
  • B23B 2233/32 Yieldable centres

Top Applicants

Top 10 applicants by patent filingsfor 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