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Expired Canadian patentCanada

A guanidinated poly l-lysine cationic polymer for accelerating nucleotide exchange reaction

CA 2575954 C · Owner: Maruyama, Atsushi · Inventors: Maruyama, Atsushi

CIPO record

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Abstract From the Canadian patent

A substance having a several ten to several hundred-fold exchange reaction accelerating activity as compared with those of conventional copolymers. In particular, there are provided preparations for accelerating an exchange reaction of a , nucleotide sequence at specified site of double stranded DNA or RNA by a nucleotide sequence homologous to the sequence which preparations comprise a , cationic polymer having a guanidino-containing main chain and hydrophilic functional , groups as an active ingredient. Thus there can be provided a substance having a , several ten to several hundred-fold exchange reaction accelerating activity as compared with those of conventional copolymers. As 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 July 29, 2004 and granted November 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 29, 2004
GrantedNovember 6, 2012
Term endedJuly 29, 2024
Patent numberCA 2575954 C
Classification (IPC)C12N15/00 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJuly 29, 2004Patent grantedNov 6, 2012Term endedJuly 29, 2024

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.