CPC Main Group
B43L 23/00 Sharpeners for pencils or leads (grinding or cutting tools in general B24; B26; combined with writing implements B43K29/06)
7 direct subcodes
Child Classifications
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- B43L 23/02 with gearing
- B43L 23/06 in which the pencils or leads are sharpened by only axial movement against cutting blades
- B43L 23/08 in which the pencils or leads are sharpened mainly by rotational movement against cutting blades (B43L23/02 takes precedence)
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