Structural reinforcement member and method of utilizing the same to reinforce a product
CA 2236735 C · Owner: Clark-Schwebel, Inc. · Inventors: Creech, Mansfield H. Jr.; Hendrix, James E.; Brown, Gordon L. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A structural member for reinforcement of asphalt and concrete roadways and other products, and which comprises a gridwork (10) of warp strands (13) and weft strands (15) which are disposed at right angles to each other and so as to define an open structure. In one embodiment the gridwork is impregnated , with a thermosettable B-stage resin so as to interlock the strands at their crossover points and maintain the gridwork in a semi-flexible state and after , being applied to the product to be reinforced the resin is heated to convert , the same into a fully cured composite to thereby rigidize the gridwork and reinforce the product. In cases where the product to be reinforced is heated …
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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 November 8, 1996 and granted April 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2018.
- 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.