Polymeric mouldings reinforced with tows of fibres
CA 2221185 C · Owner: Thicthener, Philip Edward · Inventors: Hastwell, Peter John; Thicthener, Philip Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming a moulded product of settable resin reinforce with fibres comprising drawing a bundle of tows of reinforcing fibres through a bath of fluid but settable resin mix and between die cavities of an open die, closing the die to conform the envelope shape of the tows to the shapes of surfaces which define cavities in the die; characterised by pinching the tows of the bundle at least at one end of the die sufficiently to inhibit expulsion of resin from that said end, and subjecting said tows to a high pressure while the resin sets.
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 October 30, 1992 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 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.