Anti-icing/deicing compositions, and method for their manufacture
CA 2002224 A1 · Owner: Gancy, Alan B. · Inventors: Gancy, Alan B.; Gancy, Alan B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel anti-icer/deicer liquids are prepared by reacting active MgO with aqueous acetic acid containing methanol and/or ethylene glycol. Liquids can be formulated with densities greater than that of water-ice to ensure rapid melting of ice upon application. Flash points of the methanol-containing liquids are considerably raised above that of straight methanol, due to the high solute content of these liquids. An unexpected feature of these liquids is their dramatic increase in viscosity as temperature is lowered into the practical winter icemelting zone. This reduced the tendency to spread with the consequent, significantly reduced evaporation of methanol. Higher density and viscosity also …
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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 3, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 3, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2011.
- 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.