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CPC Subgroup
B23H 1/02

Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges

Full Title

Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric > Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges

Filing statistics

CPC B23H 1/02 belongs to the parent subclass B23H, which recorded 10,207 patent applications worldwide between 2013 and 2023. Annual filings grew from 559 in 2013 to 825 in 2023 (+48%), peaking at 1,103 applications in 2019. 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

4 direct subcodes

Child Classifications

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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