Synthesis and antimicrobial activity of novel dicationic "reversed amidines"
CA 2425135 A1 · Owner: University Of North Carolina At Chapel Hill · Inventors: Perfect, John R.; Boykin, David; Wilson, W. David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel 2,5-bis{alkyl (or aryl) imino aminophenyl} furans and thiophenes of the general formula (I) in which R1 R2, R3 and R4 are each independently selected from the group consisting of H alkyl, alkoxy, halide, and alkylhalide groups; R5 is H alkyl or aryl; R6 is , H, alkyl, aryl, or NR7R8 in which R7 and R8 are each independently selected from the group consisting of H, alkyl and aryl; and X is O S or NR9, in which , R9 is H or alkyl, and to the use of such compounds.
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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 November 6, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2023.
- 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
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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.