Plastic container having a carbon-treated internal surface
CA 2499309 C · Owner: Slat, William A. · Inventors: Slat, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blow molded container having barrier properties and including an upper wall portion having an opening an intermediate sidewall portion positioned beneath the upper wall portion and a base portion positioned beneath the intermediate sidewall portion to support the container. The container includes a molded outer layer having an inner surface and an outer surface formed from at least 40% of recycled plastic and a carbon coating formed on the inner surface of the outer layer and adhered thereto and substantially coextensive with the outer layer wherein said carbon coating has a thickness of less than about 10 microns. A blow molded multi-layer container is also provided having an upper wall …
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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 26, 2000 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 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.