Patent Yard Sign in
Expired Canadian patentCanada

Woven fastener stringer

CA 1089744 A · Owner: Yoshida Kogyo K.K. · Inventors: Akashi, Shunji

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A woven fastener stringer has a row of successively interconnected coupling loops having a head an upper leg, a lower leg and a heel. The row of loops is secured to a longitudinal edge of a stringer tape by a binding system comprising a plurality of binding warp threads and a plurality of relatively large diameter thermoplastic yarns all extending longitudinally in the region of the heel of the loop. The thermoplastic yarns are elastically deformed to assume an outer peripheral surface configuration complimentary to inner guide walls of a slider to facilitate smooth running of the slider along the edge of the stringer.

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted November 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 28, 1978
GrantedNovember 18, 1980
Term endedNovember 18, 1997
Patent numberCA 1089744 A
Classification (IPC)A44B19/34 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedDec 28, 1978Patent grantedNov 18, 1980Term endedNov 18, 1997

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.