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IPC Main Group
B43M 7/00

Devices for opening envelopes

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
Subclass:
BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR

Filing statistics

IPC B43M 7/00 belongs to the parent subclass B43M, which recorded 6,878 patent applications worldwide between 2013 and 2023. Annual filings declined from 770 in 2013 to 288 in 2023 (-63%), peaking at 779 applications in 2018. The most active applicants in class B43 are PILOT CORPORATION (1,100 applications), MITSUBISHI PENCIL COMPANY (818 applications) and SOCIETE BIC (380 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

KNIFE (KNIVES) for cutting paperOPENING envelopesPAPER knives

1 direct subcode

Child Classifications

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  • B43M 7/02 Devices for both opening envelopes and removing contents

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