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CPC Subgroup
B23F 5/20

by milling

Full Title

Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made > by milling

6 direct subcodes

Child Classifications

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  • B23F 5/22 the tool being a hob for making spur gears
  • B23F 5/24 the tool being a hob for making bevel gears
  • B23F 5/26 the tool having the same profile as a tooth or teeth of a rack, for making spur gears
  • B23F 5/27 the tool having the same profile as a tooth or teeth of a crown or bevel wheel

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