Film, especially for packaging purposes, and packaging
CA 2373304 A1 · Owner: J & T Company · Inventors: Grone, Horst-Ditmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a film, especially for packaging purposes which , essentially consists of a hardened foam that is at least partially provided with an open-pored structure. Liquid can be stored in the pores of said foam. According to the invention, the pore size of the foam increases at least in sections and with an increasing distance from a first surface (8) of the film and a second surface (10) of the film, whereby said second surface is opposite the first surface.
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 11, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2022.
- 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.