Anfo explosives using an emulsified fuel phase
CA 2260467 A1 · Owner: Orica Canada Inc. · Inventors: Villamagna, Fortunato; Mcnicol, Melvin Adam; Kilcullen, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
The present invention is directed to the manufacture of an ANFO explosive wherein the fuel phase is added to an oxidizer salt in the form of an, emulsified fuel blend. A preferred fuel blend includes the use of a glycol polyglycol and/or glycol ether in combination with a fuel oil. The emulsified fuel, blend can be used to prepare ANFO explosives with modified performance properties.
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.
Why it's free to use
- Filed January 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2021.
- 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.