Lapping machines or devices; Accessories

Introduced: September 1968

Last revised: January 2012

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: GRINDING; POLISHING
Subclass:: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

Additional Content

lapping surface finishing by rubbing the surface of the work and the surface of a lapping tool, e.g. a lapping plate or lapping pad, that is mostly shaped corresponding to the work surface, against each other, mainly with loose abrasives rolling and sliding between the surfaces; the abrasives may be dispersed in a liquid medium, i.e. a slurry, or in a paste, or fixed to the lapping pad.

6 direct subcodes

Child Classifications

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B24B 37/005 Control means for lapping machines or devices
B24B 37/02 designed for working surfaces of revolution
B24B 37/04 designed for working plane surfaces
B24B 37/11 Lapping tools
B24B 37/27 Work carriers
B24B 37/34 Accessories

Top Applicants

Top 10 applicants by patent filingsfor 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