Impregnated glass fiber strands and products including the same
CA 2382188 A1 · Owner: Robertson, Walter J. · Inventors: Robertson, Walter J.; Lammon-Hilinski, Kami; Lawton, Ernest L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an at least partially coated fiber strand comprising a plurality of glass fibers having a resin compatible coating composition on at least a portion of a surface of at least one of said glass fibers, the resin compatible coating composition comprising: (a) a plurality of lamellar, inorganic particles having a Mohs' hardness value which does not exceed the Mohs' hardness value of said glass fibers; and (b) at least one polymeric material. The present invention further provides the use of a resin compatible coating composition comprising: (a) a plurality of discrete particles formed from materials selected from non-heat expandable organic materials, …
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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 July 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2022.
- 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.