Stampable reinforced thermoplastic sheet and articles obtained from said sheet
CA 2085140 A1 · Owner: Elf Atochem S.A. · Inventors: Cognet, Gilles; Lamblin, Veronique; Jacquemet, Regis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stampable reinforced thermoplastic sheet and articles obtained from said sheet", ABSTRACT, Stampable reinforced thermoplastic sheet at, least one face of which comprises, from the outside to the inside, at least three successive layers abc in, which:, - a is a matrix comprising a thermoplastic resin reinforced by at least two fillers of different nature and/or type chosen from fillers of the lamellar type and of the spherical or substantially spherical type - b is an interfacial binder chemically compatible with the thermoplastic resin of a and having with respect to the latter, a lower viscosity at the temperatures at which the sheets are produced and used and, - c is a reinforcement …
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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 December 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 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.