Films, packaging and methods for making them
CA 2476570 A1 · Owner: Ucb, S.A. · Inventors: Osgood, Dave
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described an optionally flexible and/or polymeric packaging film (e.g. BOPP) having at least one tear line (5) and at least one tab (7) thereon, where the tab (7) has a free end an end attached to the film and , free sides connecting the two ends the tab (7) positioned so the axis of at least one tear line (5) passes through both ends of the tab (7) characterised in that: (a) at least one of the free sides of the tab (7) taper outwardly from the attached end and the tear line (5); and (b) at least one angle theta (.theta.) is an acute angle greater than about 5~ where theta (.theta.) is defined as an angle subtending the free end of the tab (7) measured between: (i) an axis …
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 February 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2025.
- 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.