Composite board
CA 2130041 A1 · Owner: Tower Technologies (Proprietary) Limited · Inventors: Symons, Michael Windsor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making a composite board having a front and a back in a mould includes the steps of:, (a) applying a layer of a first composition comprising a thermosetting resin and a catalyst for the thermosetting resin to the surface of the, mould;, (b) allowing the thermosetting resin to polymerize to form the front of the composite board;, (c) applying a layer of a connecting composition comprising an adhesive or a second composition comprising a thermosetting resin and a catalyst for the thermosetting resin, to the inner surface of the front of the composite board in the mould;, (d) placing a structure comprising one or more laminae each lamina, comprising first and second sheets of a …
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 August 12, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2016.
- 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.