Abuse resistant flexible package
CA 2211789 C · Owner: Fres-Co System Usa, Inc. · Inventors: Beer, Jeffrey S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package for holding abrasive, greasy or oily material, such as dry pet food. The package is formed of a web of flexible material and has an outer surface and an inner surface. The web comprising plural layers adhesively secured to one another. The layers are in sequence from the outer surface of the package to the inner surface thereof. The sequence of layers is a first film layer formed of a heat resistant and temperature resistant material e.g. polyester, film, a second layer formed of a shock-absorbing and heat resistant paper, e.g. Kraft paper, a third film layer formed of a puncture resistant, heat resistant barrier material e.g. nylon, which also forms a gas and chemical barrier and …
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 29, 1997 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 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.