adapted for special ways of fastening

Introduced: September 1968

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Buttons > adapted for special ways of fastening

Of 9 combined children, 8 exist in both systems.

1 codes are CPC-only extensions.

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A44B 1/185 CPC only CPC only
A44B 1/20 attached by thread visible to the front IPC+CPC Available in IPC and CPC
A44B 1/22 attached by thread not visible to the front IPC+CPC Available in IPC and CPC
A44B 1/26 with resilient shank IPC+CPC Available in IPC and CPC
A44B 1/28 with shank and counterpiece IPC+CPC Available in IPC and CPC
A44B 1/38 Clamping by spring action IPC+CPC Available in IPC and CPC
A44B 1/40 with helical wire-shank screwed into material IPC+CPC Available in IPC and CPC
A44B 1/42 with deformable prongs IPC+CPC Available in IPC and CPC
A44B 1/44 with deformable counterpiece IPC+CPC Available in IPC and CPC

Class A44,2013–2023, worldwide · Source: EPO PATSTAT

YOSHIDA KOGYO JP 1,597
YOSHIDA KOGYO 1,058
ZHEJIANG WEIXING INDUSTRIAL DEVELOPMENT COMPANY 596
FUJIAN SBS ZIPPER SCIENCE & TECHNOLOGY COMPANY 471
GOERTEK TECHNOLOGY COMPANY 462
GUANGDONG XIAOTIANCAI TECHNOLOGY COMPANY 408
THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 278
3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 267
OMEGA CH 194
APPLE US 187

Class A44,2013–2023, worldwide · Source: EPO PATSTAT

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