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CPC Main Group Additional Only
B23B 2233/00

Details of centres or drivers

Filing statistics

CPC B23B 2233/00 belongs to the parent subclass B23B, which recorded 66,933 patent applications worldwide between 2013 and 2023. Annual filings declined from 4,756 in 2013 to 4,707 in 2023 (-1%), peaking at 7,816 applications in 2018. The most active applicants in class B23 are ITW (ILLINOIS TOOL WORKS) (3,642 applications), DISCO CORPORATION (3,316 applications) and FANUC (3,111 applications).

Source: EPO PATSTAT, worldwide filings

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