Key-rings

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: HUMAN NECESSITIES
Class:: HABERDASHERY; JEWELLERY
Subclass:: BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE

Filing statistics

IPC A44B 15/00 belongs to the parent subclass A44B, which recorded 31,954 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,352 in 2013 to 2,613 in 2023 (+11%), peaking at 3,432 applications in 2017. The most active applicants in class A44 are YOSHIDA KOGYO (1,597 applications), YOSHIDA KOGYO (1,058 applications) and ZHEJIANG WEIXING INDUSTRIAL DEVELOPMENT COMPANY (596 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

KEY(S) rings

Top Applicants

Top 10 applicants by patent filingsfor 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