Mixtures of adsorber materials
CA 2421423 C · Owner: Schlegel, Andreas · Inventors: Schlegel, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for producing a reagent providing a mixture of various adsorber media whose adsorbtion properties , supplement one another in the mixture wherein the adsorber mixture comprises: (a) a finely divided iron oxide and/or iron oxyhydroxide having a BET surface area , of 80 to 200m2/g; and (b) (i) oxides or (oxy)hydroxides of aluminium magnesium, manganese or titanium, (ii) Fe(OH)3 (iii) the ageing products and , dehydrogenated secondary products of (i) and (ii), or (iv) activated carbon lime, an ion , exchanger, a , zeolite, a copper compound a zinc compound or a silver compound. The process comprises mixing (b) with an aqueous suspension of (a) …
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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 March 7, 2003 and granted November 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2025.
- 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
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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.