Expired Canadian patentCanada
2-(trisubstituted phenylimino)-imidazolines
CA 1183545 A · Owner: Alcon Laboratories, Inc. · Inventors: York, Billie M. Jr.
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2-(Trisubstituted Phenylimino)-imidazolines also known as 2-(trisubstituted anilino)-1,3-diazacyclopentene-(2), compounds and their use for lowering intraocular pressure are disclosed. The compounds are represented by the general formula:,
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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 March 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2002.
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FiledNovember 12, 1982
GrantedMarch 5, 1985
Term endedMarch 5, 2002
Patent numberCA 1183545 A
Classification (IPC)C07D233/50
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.