A multi-layer material
CA 2218136 C · Owner: Ciofani, Marco · Inventors: Albanesi, Mario; Ciofani, Marco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a multi-layer material for containing liquid products, specifically for liquid products comprising a hypochlorite bleach. This multi-layer material comprises an inner layer a , layer of adhesive and an outer layer. The multi-layer material according to the present invention further comprises a means which prevents the degradation of the multi-layer material when exposed to the aggressive action of the hypochlorite bleach or components of said bleach. Specifically, said protecting means impedes that different layers of the multi-layer material de-laminate from each other.
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 March 20, 1996 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 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.