Method for the recovery of blasting oil from effluents from the production of nitroglycerine-containing explosives
CA 1067912 A · Owner: Dyno Industrier A.S. · Inventors: Ostern, Sverre L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Blasting oil contained in the effluent from the production of explosives containing nitroglycerine is recovered by extracting with nitroaromatic which make part of the final explosive. the resulting extract being used completely in the explosive production. Residues of nitroaromatics may be removed from the purified effluent by means of an extraction liquid being sparely water-soluble such, as toluene or xylene or a mixture thereof.
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 December 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 11, 1996.
- 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.