Novel anticancer agents
CA 2116621 C · Owner: Gaudreault, Rene C. · Inventors: Poyet, Patrick; Gaudreault, Rene C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is concerned with novel anticancer agents having potent antineoplastic activity without systemic toxicity and mutagenicity. The, novel anticancer agents of the present invention are derivatives of formula I: (see formula I), wherein:, A is O or NH; and B is an aryl group selected from the group consisting of phenyl indane, fluorene, indazole, indole, and pyridine the aryl group being substituted with at least one, substituent selected from the group consisting of hydrogen C1-16 alkyl , optionally, substituted with one or more OH or SH lower alkoxy, C3-6 cycloalkyl, lower, alkylthio nitro, cyano, lower alkene, lower alkyne OH, SH, carboxy lower , alkyl, carboxy lower …
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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 February 28, 1994 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2016.
- 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.