Building sheets of cement material reinforced with plastics mesh and glass fibres
CA 2000619 A1 · Owner: Magnani, Silvio · Inventors: Magnani, Silvio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Building sheets consisting of cement, inert materials and additives, and reinforced with plastics mesh and alkaliresistant glass fibres of short and/or continuous type comprising a number of superposed elementary layers consisting of a mixture of cement, inert materials and additives and each comprising as reinforcement material a plastics mesh or glass fibres. The apparatus for preparing said building sheets comprises a frame, a conveyor belt, support rollers and a slide surface for said conveyor belt, an inversion roller and a drive roller, a possible feeder for a continuous support web a, series of plastics mesh feeders, a series of feeders for glass fibre originating from bobbins, a …
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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 October 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2011.
- 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.