CPC Subgroup
B43L 11/041 Full Title
Non-circular-curve-drawing instruments (curve rulers or templets B43L13/20) > for drawing conic sections > for drawing ellipses
Filing statistics
CPC B43L 11/041 belongs to the parent subclass B43L, which recorded 10,447 patent applications worldwide between 2013 and 2023. Annual filings declined from 593 in 2013 to 523 in 2023 (-12%), peaking at 1,647 applications in 2018. The most active applicants in class B43 are SOCIETE BIC (422 applications), MITSUBISHI PENCIL COMPANY (381 applications) and PILOT CORPORATION (299 applications).
Source: EPO PATSTAT, worldwide filings
Top Applicants
Top 10 applicants by patent filingsfor 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