Expired Canadian patentCanada
Dimethylaminomethylenated anti-herpes compounds
CA 1238857 A · Owner: Syntex (U.S.A.) Llc · Inventors: Ogilvie, Kelvin K.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2-(N,N-dialkylaminomethylene)-9- 2-hydroxy-1-hydroxymethyl)ethoxymethyl guanine in admixture with interferon is active in treatment of herpes simplex type 1 viral infections.
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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 July 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 22, 1984
GrantedJuly 5, 1988
Term endedJuly 5, 2005
Patent numberCA 1238857 A
Classification (IPC)A61K31/52
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.