Blasting composition containing calcium nitrate and sulfur
CA 1069312 A · Owner: Ireco Chemicals · Inventors: Wasson, Daniel A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
The present invention relates to improved explosives or blasting compositions of the aqueous gel or slurry type. In general it concerns such blasting compositions employing a combination of calcium nitrate as oxidizer salt and sulfur as fuel. This combination effectively sensitizes the composition and renders its sensitivity relatively less dependent upon temperature. In addition this combination imparts desirable physical properties to the composition.
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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.