Tamper-evident reclosable plastic bag with slider-type zipper
CA 2263509 A1 · Owner: Tenneco Packaging Inc. · Inventors: Thomas, Toby R.; Mcmanus, Michael W.; Provan, Alexander R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reclosable plastic bag comprises first and second opposing panels fixedly connected to each other along a pair of sides and a bottom bridging the pair of sides. The bag is provided with a reclosable zipper (22) extending along a mouth formed opposite the sealed bottom (20). The zipper includes a male track with a male profile and a female track with a female profile. A slider (32) is slidably mounted to the zipper for movement between a closed position and an open position. The male and female profiles are engaged to each other while the slider is in the closed position. The male and female profiles are disengaged from each other in response to movement of the slider to the open …
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 August 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2019.
- 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.