CPC Subgroup
B43K 21/02 Writing-core feeding mechanisms
Full Title
Propelling pencils (projecting mechanisms for writing units B43K24/00; multiple-point writing implements B43K27/00) > Writing-core feeding mechanisms
6 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B43K 21/027 with sliding tubelike writing-core guide
- B43K 21/04 with the writing-cores brought into position by gravity
- B43K 21/06 with the writing-cores fed by means sliding in longitudinally-slotted casings
- B43K 21/08 with the writing-cores fed by screws
- B43K 21/16 with stepwise feed of writing-cores
- B43K 21/22 Writing-cores gripping means, e.g. chucks
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