B24 GRINDING; POLISHING
Description
B24 encompasses machines, tools, and processes for grinding and polishing solid materials through abrasive action. This class covers grinding wheels, abrasive belts, honing stones, lapping equipment, and the mechanical apparatus that drives these operations across industrial and precision applications. It includes both the design of abrasive implements and the machines that control feed rate, speed, and contact pressure to achieve desired surface finishes or dimensional tolerances. Related finishing operations such as superfinishing and related abrasive processes fall within this classification.
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS heading IPC+CPC Available in IPC and CPC
- B24C ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL heading IPC+CPC Available in IPC and CPC
- B24D TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11) heading +3 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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