Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
B23B 31/12

Chucks with simultaneously-acting jaws, whether or not also individually adjustable

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Chucks; Expansion mandrels; Adaptations thereof for remote control > Chucks > characterised by the retaining or gripping devices or their immediate operating means > Chucks with simultaneously-acting jaws, whether or not also individually adjustable

CPC:

Chucks ; Expansion mandrels; Adaptations thereof for remote control (faceplates B23Q1/50; rotary devices holding by magnetic and/or electrical force acting directly on work B23Q3/152) > Chucks > characterised by the retaining or gripping devices or their immediate operating means > Chucks with simultaneously-acting jaws, whether or not also individually adjustable

Of 10 combined children, 6 exist in both systems.

4 codes are CPC-only extensions.

Child Classifications

Navigate with arrow keys, Enter to open

  • B23B 31/19 moving parallel to the axis of the chuck IPC+CPC Available in IPC and CPC
  • B23B 31/22 Jaws in the form of balls IPC+CPC Available in IPC and CPC
  • B23B 31/223 CPC only CPC only
  • B23B 31/226 CPC only CPC only

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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