Emulsion explosive
CA 2030169 C · Owner: Sujansky, Vladimir · Inventors: Sujansky, Vladimir
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
An emulsion explosive comprising a discontinuous oxygen-releasing salt phase, a continuous fuel phase and an emulsifier blend said emulsifier, blend comprising a first emulsifier component consisting of at least one emulsifier comprising a lipophilic moiety being a polymer of a C2 to C6, olefin, and a hydrophilic moiety being derived from an amine wherein the HLB of the first emulsifier component, as herein defined is in the range of, from 1.0 to 1.3 and a second emulsifier component and wherein the HLB of the emulsifier blend, as herein defined is in the range of from 1.4 to 3Ø Compositions of the present invention combine not only ease of formation and long term stability but also provide …
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 November 16, 1990 and granted August 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2012.
- 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.