B24B 37/20 Lapping pads for working plane surfaces
Introduced: January 2012
Full Title
Full titles differ between systems:
Lapping machines or devices; Accessories > Lapping tools > Lapping pads for working plane surfaces
Lapping machines or devices; Accessories (B24B3/00 takes precedence) > Lapping tools > Lapping pads for working plane surfaces
Additional Content IPC
Lapping pad Lapping pads A lapping pad is made of relatively soft material, usually provided on a support structure, i.e. the lapping plate, for holding the loose abrasive temporarily during lapping or having the abrasive incorporated therein (fixed abrasive)
Of 4 combined children, 3 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 2012.
Child Classifications
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- B24B 37/24 characterised by the composition or properties of the pad materials since 2012 +1 CPC IPC+CPC Available in IPC and CPC
- B24B 37/26 characterised by the shape of the lapping pad surface, e.g. grooved since 2012 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B24,2013–2023, worldwide · Source: EPO PATSTAT
- DISCO ABRASIVE SYSTEM 3,084
- APPLIED MATERIALS US 1,570
- EBARA CORPORATION JP 1,393
- DISCO CORPORATION JP 1,368
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,270
- EBARA CORPORATION 1,016
- FUJIMI JP 829
- ZHEJIANG UNIVERSITY OF TECHNOLOGY 804
- ROBERT BOSCH DE 803
- SAINT-GOBAIN ABRASIVES US 781
Top Applicants (CPC)
Class B24,2013–2023, worldwide · Source: EPO PATSTAT
- DISCO CORPORATION JP 2,092
- APPLIED MATERIALS US 1,813
- EBARA CORPORATION JP 1,804
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,329
- ROBERT BOSCH DE 863
- FUJIMI JP 858
- SAINT-GOBAIN ABRASIVES US 833
- EBARA CORPORATION 810
- SAINT-GOBAIN ABRASIVES FR 782
- DISCO ABRASIVE SYSTEM 735