Microbicides
CA 2085824 A1 · Owner: Hostettler, Bernhard · Inventors: Muller, Urs; Yamaguchi, Yasuchika; Ackermann, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PF/5-18915/A, Abstract, Microbicides, Benzotriazolesulfonic acid derivatives of formula I (I), wherein R3 = R4X and R4 is an unsaturated 6-membered heterocycle having a maximum of 2 nitrogen atoms, it being possible for the heterocycle to be substituted and X is, oxygen or sulfur, while R1 and R2 are as defined herein are valuable microbicides. They, can be used in plant protection in the form of suitable compositions for example for, controlling fungal diseases.
Read the whole patent
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 December 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2014.
- 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.