Slide fastener
CA 2117005 C · Owner: Ykk Corporation · Inventors: Horikawa, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slide fastener which permits easy attachment of electric conductors and ensures supply of electric current to all metallic coupling elements even if a part of the electric conductors is cut off. And it has a neat appearance because the electric conductors exposed in spaces among the coupling elements do not look unsightly. In the slide fastener having a fastener tape a core cord and metal-, lic coupling elements disposed along a longitudinal edge of one side of the fastener tape, a plurality of electric conductors are used as a part of warps of the fastener tape, and the exposed portions of the electric conductors are shifted one another in the longitudinal direction. Therefore, the …
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 March 4, 1994 and granted February 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2016.
- 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.