CPC Subgroup
B43L 1/12 having translucent writing surfaces producing visual impressions by co-operation with backing members
Full Title
Repeatedly-usable boards or tablets for writing or drawing (drawing-boards B43L5/00) > having translucent writing surfaces producing visual impressions by co-operation with backing members
1 direct subcode
Child Classifications
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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