Expired Canadian patentCanada
Metal complexes prepared by reacting an alkanolamine, a mixture of metal alkoxides and a polyhydric alcohol
CA 1112654 A · Owner: Manchem Limited · Inventors: Womersley, Peter
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal complexes prepared by the reaction of less than one mole of an alkanolamine with at least one mole of a metal alkoxide and a polyhydric alcohol. The complexes are useful imparting thixotropy to systems containing protective organic colloids.
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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 November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 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.
FiledFebruary 7, 1978
GrantedNovember 17, 1981
Term endedNovember 17, 1998
Patent numberCA 1112654 A
Classification (IPC)C07F5/06 +2 more
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.