CPC Subgroup
B43K 21/24 Assembling, finishing, or repairing propelling pencils (making pencil writing-cores B43K19/18)
Full Title
Propelling pencils (projecting mechanisms for writing units B43K24/00; multiple-point writing implements B43K27/00) > Assembling, finishing, or repairing propelling pencils (making pencil writing-cores B43K19/18)
1 direct subcode
Child Classifications
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- B43K 21/26 Automatic machines
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