Expired Canadian patentCanada
Modified phosphoramidite process for the production or modified nucleic acids
CA 2017369 C · Owner: Muhlegger, Klaus · Inventors: Seliger, Heinz-Hartmut; Muhlegger, Klaus; Batz, Hans-Georg
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 modified phosphoramidite process for the synthesis of nucleotide sequences. By use of a modified nucleoside phosphoramidite it is possible to produce nucleotide sequences which have a modified phosphate residue.
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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 May 23, 1990 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 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.
FiledMay 23, 1990
GrantedJanuary 23, 2001
Term endedMay 23, 2010
Patent numberCA 2017369 C
Classification (IPC)C12N15/10 +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.