Slide fastener
CA 2017863 C · Owner: Yoshida Kogyo K.K. · Inventors: Horita, Yoshiyuki; Wake, Kiyoyasu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slide fastener comprising a pair of stringer tapes each carrying along their respective inner longitudinal edges a row of coupling elements. The slide fastener is produced from a continuous fastener chain having mounted thereon alternate sliders and top end stops both movable along the rows of coupling elements. Either the slider or the top end stop is provided with a latch for retaining the slider in provisionally or completely locked engagement with the top end stop.
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 May 30, 1990 and granted August 2, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2012.
- 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.