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IPC Main Group
B24D 9/00

Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
GRINDING; POLISHING
Subclass:
TOOLS FOR GRINDING, BUFFING OR SHARPENING

3 direct subcodes

Child Classifications

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  • B24D 9/02 Expansible drums for carrying flexible material in tubular form, e.g. expanded by centrifugal force

Top Applicants

Top 10 applicants by patent filingsfor 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