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Expired Canadian patentCanada

Triazole antifungal agents

CA 1270836 C · Owner: Narayanaswami, Subramaniyan · Inventors: Narayanaswami, Subramaniyan; Richardson, Kenneth

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Abstract From the Canadian patent

Title: Triazole Antifungal Agents A compound of the formula:-, (I), where R is a phenyl group optionally substituted by 1 to 3 substituents each independently selected from F Cl, Br, I, CF3, C1-C4 alkyl and C1-C4 alkoxy or R is a 5-chloropyrid-2-yl group;, X is -OH -F, -Cl or -Br;, R1 and R2 are each independently H CH3 or F; and Het is a, 1-tetrazolyl or 2-tetrazolyl group; or an O-ester or O-ether of a compound in which X is -OH; or a pharmaceutically or agriculturally acceptable salt of said compounds and esters and ethers. The compounds are useful as antifungal agents for human, veterinary and agricultural use. PLC 413

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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 June 26, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 12, 1986
GrantedJune 26, 1990
Term endedJune 26, 2007
Patent numberCA 1270836 C
Classification (IPC)C07D401/14 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedMarch 12, 1986Patent grantedJune 26, 1990Term endedJune 26, 2007

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