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Expired Canadian patentCanada

Macrolide compounds

CA 1296329 C · Owner: Pereira, Oswy Z. · Inventors: Pereira, Oswy Z.; Noble, Hazel M.; Noble, David

CIPO record

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Abstract From the Canadian patent

Compounds are described of formula (I) (I), and salts thereof, wherein, R1 represents a methyl ethyl or isopropyl, group;, R2 represents a hydrogen atom a C1-8 alkyl, group or a C3-8 alkenyl group and the group =NOR2 is in the E-configuration;, OR3 is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms. These compounds may be used for controlling insect, acarine, nematode or other pests.

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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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 26, 1987
GrantedFebruary 25, 1992
Term endedFebruary 25, 2009
Patent numberCA 1296329 C
Classification (IPC)C07D493/22 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 26, 1987Patent grantedFeb 25, 1992Term endedFeb 25, 2009

Sources & verification

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