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Expired Canadian patentCanada

Alkynylamino-nucleotides

CA 1340022 C · Owner: Hobbs, Frank Worden Jr. · Inventors: Hobbs, Frank Worden Jr.; Cocuzza, Anthony Joseph

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Alkynylamino-nucleotides and labeled, alkynylamino-nucleotides useful for example, as, chain terminating substrates for DNA sequencing are provided along with several key intermediates and processes for their preparation.

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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 September 1, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 30, 1987
GrantedSeptember 1, 1998
Term endedSeptember 1, 2015
Patent numberCA 1340022 C
Classification (IPC)C07D239/46 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006200920122015Application filedJune 30, 1987Patent grantedSep 1, 1998Term endedSep 1, 2015

Sources & verification

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