Composite material
CA 2070830 A1 · Owner: Wilson, Robert S. · Inventors: Braniff, Mark A.; Wilson, Robert S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite material is manufactured from two spaced stacks (2 and 4) of intermediate fabric material. Each stack consists of a plurality of layers of material placed together face to face. Each layer is formed by embedding high strength fibres having a high modulus of elasticity in a resin matrix. The stacks (2 and 4) are removed from a release film (6), and a film of adhesive is applied to the lower surface of the side portion (8) of the stack (2) and the upper surface of the side portion (10) of the stack (4). These side portions (8 and 10) are placed in overlapping relationship, and are then crimp fastened together by a plurality of fasteners (12). Further layers (14 and 16) of …
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 December 6, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.