Macrocyclic ligands bonded to sand or silica gel and their use in selectively and quantitatively removing and concentrating ions present at low concentrations from mixtures thereof with other ions
CA 1317592 C · Owner: Brigham Young University · Inventors: Bruening, Ronald L.; Izatt, Reed M.; Bradshaw, Jerald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention has composition of matter and process aspects. The composition of matter aspect relates to the compounds selected from the class consisting of:, In which Silica is sand or silica gel The process aspect involves the use of any of these compounds packed in a column through which a solution of the multiple ions is flowed to complex with the compound and separate a desired selected ion from a multiple ion solution breaking the complex by flowing a receiving liquid through the column to free the desired ion and recovering the freed desired ion from the receiving liquid.
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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 May 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 2010.
- 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.