Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
B43K 7/035

the gas acting on a piston

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Ball-point pens > Ink reservoirs; Ink cartridges > pressurised, e.g. by gas > the gas acting on a piston

CPC:

Ball-point pens (; multiple-point writing implements B43K27/00) > Ink reservoirs; Ink cartridges (B43K7/01 takes precedence) > pressurised, e.g. by gas > the gas acting on a piston

No child classifications to compare. This is a leaf node in both 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