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PCE
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IPC Subgroup
B43L 1/04

Blackboards

Introduced: September 1968

Last revised: January 2006

Full Title

Repeatedly-usable boards or tablets for writing or drawing > Blackboards

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
Subclass:
ARTICLES FOR WRITING OR DRAWING UPON; ACCESSORIES FOR WRITING OR DRAWING

Related Keywords

BLACKBOARDSblack BOARD(S)

3 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor 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