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IPC Main Group
B23H 3/00

Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte

Introduced: January 1985

Last revised: January 2006

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
Subclass:
WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL

Related Keywords

ELECTRO-CHEMICAL machining

4 direct subcodes

Child Classifications

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  • B23H 3/02 Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits
  • B23H 3/08 Working media
  • B23H 3/1 Supply or regeneration of working media

Top Applicants

Top 10 applicants by patent filingsfor class B23, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ITW (ILLINOIS TOOL WORKS) US 3,407
  2. FANUC JP 3,120
  3. DISCO ABRASIVE SYSTEM 2,777
  4. HAN'S LASER TECHNOLOGY INDUSTRY GROUP COMPANY 2,629
  5. ROBERT BOSCH DE 2,468
  6. FANUC 2,273
  7. DISCO CORPORATION JP 2,267
  8. GE (GENERAL ELECTRIC COMPANY) US 1,611
  9. CHINESE ACADEMY OF SCIENCES 1,534
  10. ISCAR IL 1,499