CPC Main Group
B43L 9/00 Circular curve-drawing or like instruments (curve rulers or templets B43L13/00)
8 direct subcodes
Child Classifications
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- B43L 9/02 Compasses (proportional compasses B43L9/08; Compasses for drawing spirals B43L11/06)
- B43L 9/08 Proportional compasses or dividers
- B43L 9/12 Dividers (proportional dividers B43L9/08)
- B43L 9/14 with changeable leg-ends for conversion into compasses, dividers, or callipers (B43L9/24 takes precedence)
- B43L 9/16 Features common to compasses, dividers, and callipers
Top Applicants
Top 10 applicants by patent filingsfor class B43, 2013–2023, worldwide · Source: EPO PATSTAT
- SOCIETE BIC FR 422
- MITSUBISHI PENCIL COMPANY JP 381
- PILOT CORPORATION JP 299
- MITSUBISHI PENCIL COMPANY 213
- PILOT CORPORATION 100
- WACOM COMPANY JP 89
- STAEDTLER MARS & COMPANY DE 87
- KOTOBUKI JP 82
- CRAYOLA US 78
- SANFORD US 73