DIFF Subgroup
B43K 19/04 Pencils with metallic writing-core
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Non-propelling pencils; Styles; Crayons; Chalks > Pencils with metallic writing-core
CPC:
Non-propelling pencils; Styles; Crayons; Chalks (batik pencils, cord-line chalkers B44D3/00; writing-core compositions for pencils, crayon compositions, chalk compositions C09D13/00) > Pencils with metallic writing-core
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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- B43K 19/06 the writing-core being made from substance wearing off during use IPC+CPC Available in IPC and CPC
- B43K 19/08 the writing-core being made from wear-resistant substances IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B43,2013–2023, worldwide · Source: EPO PATSTAT
- PILOT CORPORATION 1,100
- MITSUBISHI PENCIL COMPANY 818
- SOCIETE BIC FR 380
- MITSUBISHI PENCIL COMPANY JP 371
- PILOT CORPORATION JP 273
- DELI GROUP COMPANY 249
- SHANGHAI M&G STATIONERY 176
- PENTEL 169
- ZEBRA PEN CORPORATION 153
- GUANGZHOU SHIRUI ELECTRICAL TECHNOLOGY COMPANY 124
Top Applicants (CPC)
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