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Expired Canadian patentCanada

Water-in-wax emulsion blasting agents

CA 1188898 A · Owner: Ici Canada Inc. · Inventors: Bampfield, Howard A.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Water-in-Wax Emulsion Blasting Agents A water-in-wax emulsion explosive composition is provided wherein the continuous carbonaceous fuel phase comprises paraffin wax together with a minor amount of a rheology modifier and stabilizer combination comprising an ethylene-containing polymer and a low molecular weight hydrocarbon liquid. The resulting explosive composition exhibits properties of viscosity and stability comparable to similar compositions containing highly refined microcrystalline wax fuels.

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 June 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 21, 1983
GrantedJune 18, 1985
Term endedJune 18, 2002
Patent numberCA 1188898 A
Classification (IPC)C06B45/02 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedApril 21, 1983Patent grantedJune 18, 1985Term endedJune 18, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.