Process for manufacturing a composite material
CA 2029206 C · Owner: Lesmerises, Normand · Inventors: Lesmerises, Normand; Delvaux, Pierre; Desrosiers, Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for manufacturing composite materials of high quality whatever be the respective amount proportion and kind of constituents used in the starting mixture which comprises a binder made of two components capable of reacting with each other, at least one of these two components being in a liquid form, at least one filler, and reinforcing fibers, the binder being selected from the group of binders made of the following components: hydraulic cement and water; potassium and sodium silicate and water, colloidal silica and water; and organic resins and resin hardeners or catalysts. According to this process all the liquid component of the, binder is impregnated into an absorbing substance …
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 November 2, 1990 and granted October 29, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2012.
- 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.