DIFF Main Group
B43K 23/00 Holders or connectors for writing implements; Means for protecting the writing-points
Introduced: September 1968
Of 8 combined children, 7 exist in both systems.
1 codes are CPC-only extensions.
5 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B43K 23/004 Holders specially adapted for assisting handicapped or disabled persons to write (B43L15/00 takes precedence) since 1995 IPC+CPC Available in IPC and CPC
- B43K 23/008 Holders comprising finger grips (B43K23/004, B43K23/012 take precedence) since 1995 IPC+CPC Available in IPC and CPC
- B43K 23/012 Holders for attachment to finger tips (B43K23/004 takes precedence) since 1995 IPC+CPC Available in IPC and CPC
- B43K 23/016 Holders for crayons or chalks (B43K23/004 - B43K23/012, B43K23/02 take precedence) since 1995 IPC+CPC Available in IPC and CPC
- B43K 23/02 with means for preventing rolling (B43K23/004 - B43K23/012 take precedence) IPC+CPC Available in IPC and CPC
- B43K 23/06 Means for connecting two or more writing implements since 1995 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