Composition and method for forming a sprayable materials cover
CA 2445675 A1 · Owner: Shi, Caijun · Inventors: Shi, Caijun; Wu, Yanzhong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alternative cover for landfill may be formed from a slurry mixture of water, cementitious, binder, adhesion enhancing admixture and fiber. These constituents may be mixed and, applied to cover landfilled wastes granular material piles or for soil , erosion control. The cover will harden to minimize water infiltration wind blown dust, odor and , affinity to birds flies and other insects. The water may include tap water landfill leachate , and wastewater. The binder may include Portland cement blended cement, cement kiln dust, class C fly ash and /or calcium sulphate hemihydrate. The adhesion enhancing admixture includes , water-dispersible polymers. The fibers may comprise shredded …
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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 October 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2025.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.