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PCE
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CPC Subgroup
A44B 1/28

with shank and counterpiece

Full Title

Buttons > adapted for special ways of fastening > with shank and counterpiece

4 direct subcodes

Child Classifications

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  • A44B 1/30 Screw-buttons
  • A44B 1/32 Shank inserted into counterpiece and locked by sliding or rotating
  • A44B 1/34 with snap-action counterpiece
  • A44B 1/36 with counterpiece in the form of cotter, split-pin, or the like

Top Applicants

Top 10 applicants by patent filingsfor class A44, 2013–2023, worldwide · Source: EPO PATSTAT

  1. YOSHIDA KOGYO JP 1,555
  2. YOSHIDA KOGYO 888
  3. THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 358
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 314
  5. APPLE US 234
  6. OMEGA CH 216
  7. GOERTEK TECHNOLOGY COMPANY 189
  8. APLIX FR 176
  9. FIDLOCK DE 149
  10. SAMSUNG ELECTRONICS COMPANY KR 145