Structural analogs of amine bases and nucleosides
CA 2339967 C · Owner: Segev, David · Inventors: Segev, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound of a general structure: D-B-M wherein B is selected from the , group consisting of derivatives of naturally occurring nitrogenous bases having a C-H group of positions 5 or 8 and derivatives of nitrogenous base-, analogs having a C-H group at positions 5 or 8; D is at least one derivatizing group, including hydrogen; and M is a maleimide derivative.
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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 August 4, 1999 and granted June 7, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2021.
- 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.