Titanium-glycol useful as crosslinking agents for polygalactomannans
CA 1262896 C · Owner: Stein, Hall & Co. Inc. · Inventors: Morgan, Michael E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Aqueous solutions of polygalactomannans are crosslinked with the reaction product of titanium tetrachloride and a water-soluble alcohol or diol. Such crosslinked products are useful in fracturing solutions for secondary oil recovery or in gel explosives.
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 November 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 14, 2006.
- 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.