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CPC Main Group
B23F 15/00

Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00

5 direct subcodes

Child Classifications

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  • B23F 15/02 Making gear teeth on wheels of varying radius of operation, e.g. on elliptical wheels
  • B23F 15/04 Making fine-pitch gear teeth on clock wheels or the like by special machining
  • B23F 15/06 Making gear teeth on the front surface of wheels, e.g. for clutches or couplings with toothed faces
  • B23F 15/08 Making intermeshing rotors, e.g. of pumps

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