Expired Canadian patentCanada
Bioaccumulation of metals
CA 1250242 A · Owner: The Regents Of The University Of Minnesota · Inventors: Wood, John M.; Engle, Francis E.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermophilic-acidophilic alga a strain of Cyanidium, caldarium, is disclosed as having a very effective external uptake of metals from metal-containing aqueous media.
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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 February 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 2, 1984
GrantedFebruary 21, 1989
Term endedFebruary 21, 2006
Patent numberCA 1250242 A
Classification (IPC)C12N1/20 +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.