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DIFF Main Group
B24B 19/00

Single-purpose machines or devices for particular grinding operations not covered by any other main group (tapering, chamfering, or relief cutting of taps or reamers B24B3/20, B24B3/22, grinding screw threads B23G)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Single purpose machines or devices for particular grinding operations not covered by any other main group

CPC: Single-purpose machines or devices for particular grinding operations not covered by any other main group (tapering, chamfering, or relief cutting of taps or reamers B24B3/20, B24B3/22, grinding screw threads B23G)

Full Title

Full titles differ between systems:

IPC:

Single purpose machines or devices for particular grinding operations not covered by any other main group

CPC:

Single-purpose machines or devices for particular grinding operations not covered by any other main group (tapering, chamfering, or relief cutting of taps or reamers B24B3/20, B24B3/22, grinding screw threads B23G)

CPC subdivides this area 2x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • B24B 19/003 CPC only CPC only
  • B24B 19/004 CPC only CPC only
  • B24B 19/005 CPC only CPC only
  • B24B 19/006 CPC only CPC only
  • B24B 19/007 CPC only CPC only
  • B24B 19/008 CPC only CPC only
  • B24B 19/009 CPC only CPC only
  • B24B 19/14 for grinding turbine blades, propeller blades or the like (using grinding belts B24B21/16) IPC+CPC Available in IPC and CPC
  • B24B 19/20 for grinding dies (for grinding walls of very fine holes B24B5/48) IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B24,2013–2023, worldwide · Source: EPO PATSTAT

  1. DISCO ABRASIVE SYSTEM 3,084
  2. APPLIED MATERIALS US 1,570
  3. EBARA CORPORATION JP 1,393
  4. DISCO CORPORATION JP 1,368
  5. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,270
  6. EBARA CORPORATION 1,016
  7. FUJIMI JP 829
  8. ZHEJIANG UNIVERSITY OF TECHNOLOGY 804
  9. ROBERT BOSCH DE 803
  10. SAINT-GOBAIN ABRASIVES US 781

Top Applicants (CPC)

Class B24,2013–2023, worldwide · Source: EPO PATSTAT

  1. DISCO CORPORATION JP 2,092
  2. APPLIED MATERIALS US 1,813
  3. EBARA CORPORATION JP 1,804
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,329
  5. ROBERT BOSCH DE 863
  6. FUJIMI JP 858
  7. SAINT-GOBAIN ABRASIVES US 833
  8. EBARA CORPORATION 810
  9. SAINT-GOBAIN ABRASIVES FR 782
  10. DISCO ABRASIVE SYSTEM 735