Laminar product of a thermosetting resin mixture and fibrous material
CA 2222485 A1 · Owner: Ozinga, Cornelis · Inventors: Walter, Eva B.; Janse, Gerardus H.A.; Ozinga, Cornelis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a laminar product comprising fibrous material and a thermosetting resin mixture as matrix, and is characterized in that the fibrous material does not contain a binder and is composed of discontinuous fibres, some of which are oriented virtually perpendicularly to the plane of the sheet. The invention also relates to a process for the preparation of the laminar product.
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 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2019.
- 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.