Improved zipper for slider package
CA 2272675 A1 · Owner: Van Erden, Donald L. · Inventors: Van Erden, Donald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slide zipper assembly comprising an interlocking zipper and a slider is provided. The zipper has a first profile and a second profile. The profiles each have a ribbon a web, attached to the ribbon, and an interlocking member attached to the web engageable with the interlocking member of the other profile. The slider is disposed for movement along the zipper and has a top from which two arms depend. The slider arms enclose the profile ribbons and have hooked ends which each hook around a profile ribbon to become positioned between the ribbon and its corresponding web.
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 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2021.
- 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.