Solid compositions for selective adsorption from complex mixtures
CA 2457730 A1 · Owner: W.R. Grace & Co.-Conn. · Inventors: Wormsbecher, Richard Franklin
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 solid and method useful in separating chemical components in a complex mixture when at least one of the chemical components of the mixture is capable of being selectively adsorbed. The solid of the present invention comprises an inorganic substance and moieties (R10) located on at least one surface of the inorganic substance wherein said , inorganic substance is an inorganic oxide and the surface moiety is selected from the group consisting of -CH2OH, -CH(OH)2 -CH(OH)CH3, -CH2CH2OH, -, C(OH)2CH3, -CH2CH(OH)2 and -CH(OH)CH2(OH). Binding moiety optionally attached , to the inorganic substance via a linker can also be located on the surface of the solid.
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, and the Claude kit works from them.
Why it's free to use
- Filed August 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2024.
- 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.