Expired Canadian patentCanada
13-halo-23-imino derivatives of ll-f28249 compounds and their use as endo- and ectoparasiticidal insecticidal, acaricidal and nematocidal agents
CA 2024825 C · Owner: Wyeth Holdings Corporation · Inventors: Tseng, Shin-Shyong; Buckwalter, Brian Lee
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are provided certain 13-halo-23-imino- LL-F28249 compounds which are useful for controlling endo- and ectoparasites, insects, acarids and nematodes.
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 7, 1990 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 7, 1990
GrantedAugust 20, 2002
Term endedSeptember 7, 2010
Patent numberCA 2024825 C
Classification (IPC)C07D493/22 +2 more
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.