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IPC Subgroup
B24D 9/08

Circular back-plates for carrying flexible material

Introduced: September 1968

Last revised: January 2006

Full Title

Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper > Circular back-plates for carrying flexible material

Classification Context

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

1 direct subcode

Child Classifications

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  • B24D 9/1 with suction means for securing the material

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