CPC Subgroup
B24B 37/20 Lapping pads for working plane surfaces
Full Title
Lapping machines or devices; Accessories (B24B3/00 takes precedence) > Lapping tools > Lapping pads for working plane surfaces
4 direct subcodes
Child Classifications
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- B24B 37/22 characterised by a multi-layered structure
- B24B 37/24 characterised by the composition or properties of the pad materials
- B24B 37/26 characterised by the shape of the lapping pad surface, e.g. grooved
Top Applicants
Top 10 applicants by patent filingsfor 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