Knit slide fastener
CA 2174697 C · Owner: Matsuda, Yoshio · Inventors: Kato, Hidenobu; Matsuda, Yoshio; Ikeguchi, Yoshito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a knit slide fastener in which a continuous fastener element row is knitted in a fastener element attaching marginal portion of each of fastener tapes simultaneously with the knitting of the fastener tape the fastener element attaching marginal portion includes a plurality of parallel binding chain stitch yarns extending longitudinally of the marginal portion for holding the fastener element row to the marginal portion. One of the binding chain stitch yarns which is adjacent to coupling heads of fastener elements is larger in size than the remaining binding stitch yarns.
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
- Filed April 22, 1996 and granted October 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.