Non-aqueous acid emulsion composition and method for acid-treating siliceous geological formations
CA 1105693 A · Owner: Union Oil Company Of California · Inventors: Maly, George P.; Young, Donald C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stable non-aqueous acid emulsion composition comprising an admixture of a substantially anhydrous polyphosphoric acid-based mixture, an organic solvent and a surfactant;, and a method for increasing the permeability of siliceous subterranean geological formations.
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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, and the Claude kit works from them.
Why it's free to use
- Granted July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1998.
- 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.