Silicon compounds with microbiocidal activity
CA 2534867 C · Owner: Lamberth, Clemens · Inventors: Ehrenfreund, Josef; Lamberth, Clemens; Tobler, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fungicidal compounds of formula (I): where X is O or S; RING is phenyl or thienyl; Het is a 5- or 6-membered heterocyclic ring containing one to three heteroatoms, each independently selected from oxygen nitrogen and sulphur, the ring being substituted by one to four groups R4 ; R1 is hydrogen optionally substituted (C1-4)alkyl, formyl optionally substituted (C1-, 4)alkylC(=O) optionally substituted (C1-4)alkylC(=O)O optionally substituted , (C1-4)alkoxy(C1-4)alkyl optionally substituted allyl, optionally substituted propargyl or optionally substituted allenyl; each R2 is independently, halogen, optionally substituted (C1-4)alkyl optionally substituted (C1-, 4)alkoxy or optionally …
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 September 8, 2004 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2026.
- 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.