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PCE
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DIFF Subgroup
B43K 24/02

for locking a single writing unit in only fully projected or retracted positions

Introduced: September 1968

Full Title

Mechanisms for selecting, projecting, retracting or locking writing units > for locking a single writing unit in only fully projected or retracted positions

Of 6 combined children, 4 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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  • B43K 24/023 CPC only CPC only
  • B43K 24/026 CPC only CPC only
  • B43K 24/03 operated by flicking or tilting since 1995 IPC+CPC Available in IPC and CPC
  • B43K 24/04 operated by means sliding in longitudinally-slotted casings IPC+CPC Available in IPC and CPC
  • B43K 24/06 operated by turning means IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B43,2013–2023, worldwide · Source: EPO PATSTAT

  1. PILOT CORPORATION 1,100
  2. MITSUBISHI PENCIL COMPANY 818
  3. SOCIETE BIC FR 380
  4. MITSUBISHI PENCIL COMPANY JP 371
  5. PILOT CORPORATION JP 273
  6. DELI GROUP COMPANY 249
  7. SHANGHAI M&G STATIONERY 176
  8. PENTEL 169
  9. ZEBRA PEN CORPORATION 153
  10. GUANGZHOU SHIRUI ELECTRICAL TECHNOLOGY COMPANY 124

Top Applicants (CPC)

Class B43,2013–2023, worldwide · Source: EPO PATSTAT

  1. SOCIETE BIC FR 422
  2. MITSUBISHI PENCIL COMPANY JP 381
  3. PILOT CORPORATION JP 299
  4. MITSUBISHI PENCIL COMPANY 213
  5. PILOT CORPORATION 100
  6. WACOM COMPANY JP 89
  7. STAEDTLER MARS & COMPANY DE 87
  8. KOTOBUKI JP 82
  9. CRAYOLA US 78
  10. SANFORD US 73