Synthetic resin solid surface material and method of making same
CA 2083474 A1 · Owner: Duraglas Products Ltd. · Inventors: Turner, Douglas C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A synthetic resin solid surface material (10) such as cultured marble or onyx, and which is cast as a unitary structure, comprises a front or working surface formed by a first layer (16) of a synthetic resin a rear, surface formed by a second layer (18) of a synthetic resin and a layer of a core material (14) sandwiched between the first and second layers. A fibrous reinforcing material (22) is provided between the first layer (16) and the core (14). In one embodiment of the invention the core, material comprises plywood. In another embodiment the, core material comprises balsa wood with its grain arranged to extend between the first and second layers and including a further fibrous …
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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 November 20, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2014.
- 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.