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IPC Subgroup
B24B 9/16

of diamonds, of jewels or the like; Diamond grinders' dops; Dop holders or tongs

Introduced: September 1968

Last revised: January 2006

Full Title

Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor > characterised by a special design with respect to properties of materials specific to articles to be ground > of non-metallic inorganic material, e.g. stone, ceramics, porcelain > of diamonds, of jewels or the like; Diamond grinders' dops; Dop holders or tongs

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

Related Keywords

abrasive grinding or polishing of DIAMOND(S)DOPSabrasive grinding of bevels or edges of GEM(S)

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