Method for recovering solid molybdenum compounds
CA 2019147 A1 · Owner: Texaco Chemical Inc. · Inventors: Keating, Kenneth Patrick; Marquis, Edward Thomas; Sanderson, John Ronald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
METHOD FOR RECOVERING SOLID MOLYBDENUM COMPOUNDS (Docket No. 80,697-F), ABSTRACT OF THE DISCLOSURE A process for substantially completely removing a minor amount of molybdenum dissolved in a substantially anhydrous organic solution, such as a heavy distillation fraction resulting from the removal of unreacted propylene propylene, oxide and tertiary butyl alcohol from an epoxidation reaction mixture:, wherein from about 1 to about 10 wt.% of an aqueous solution of sodium meta borate containing from about 1 to about 10 wt.% of dissolved sodium meta borate is added to an organic solution containing dissolved molybdenum catalyst in an amount sufficient to provide a molar excess of sodium meta …
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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
- Filed June 18, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.