Superimposed coverings having increased stability
CA 2192676 C · Owner: Oliver, John H. · Inventors: Andrenacci, Alfredo; Romano, Michael A.; Oliver, John H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An article, for example a pipe (11a, 11b) has a first covering (13a, 13b) , such as a polymer layer and a second covering, such as a repair patch (18a) or a repair deposit of melt-on adhesive (22) or a wrap or a sleeve (16) protecting a welded joint (12) between two lengths (11a 11b) of such pipe. , The second covering (16) may have a functional coating (16b) on an underside which is applied on and is at least partially superimposed over the first covering (13a, 13b). A cured deposit (17 21, 23) of thermoset resin is , applied at least over the edges of the second covering (16 18a, 22), for , example in the form of a fibrous tape impregnated with a curable resin composition, and bonds …
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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 June 16, 1995 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2017.
- 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.