Reclosable bags with tamper evident features and methods of making the same
CA 2521804 C · Owner: Cameron, David P. · Inventors: Rehwinkel, Gary E.; Cameron, David P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reclosable package comprises first and second opposing body panels a , reclosable seal and a one-time breakable element. The reclosable seal extends along one end and includes first track and second tracks. The first track includes a first fin portion and a first reclosable element. The first fin portion has a first end and a second end that is further from the first reclosable element. The one-time breakable element comprises first and second sections and initially extends from the first fin portion to the second fin portion. Each of the first and second sections extends upwardly and inwardly from near the respective second ends of the first and second fin portions so as to form …
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 19, 2004 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2026.
- 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.