Film, backseamed casings therefrom, and packaged product using same
CA 2228013 C · Owner: Ramesh, Ram K. · Inventors: Ramesh, Ram K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A backseamed casing has a casing film comprising a first outer layer and a second outer layer, the first layer containing a polyamide having a melting point of from about 250-400 ~F, and the second outer layer containing a polyamide having a melting point of from about 250-400 ~F. A butt-sealed backseamed casing has a casing film to which a butt-seal tape film is sealed the casing film having an inside layer containing a polyamide having a melting point of from about 250-480 ~F, and an outside layer comprising polyofin with , the butt-seal tape film comprising polyolefin. A heat-shrinkable film has a first outer layer, a second outer layer and an inner layer. The first outer , layer …
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 July 25, 1996 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2018.
- 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.