Expired Canadian patentCanada
Esters of 9-(2-hydroxyethoxymethyl)guanine having antiviral properties
CA 1340084 C · Owner: The Wellcome Foundation Limited · Inventors: Krenitsky, Thomas A.
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-(2-Amino-1,6-dihydro-6-oxo-9H-purin-9yl)methoxyethyl L-isoleucinate and its pharmaceutically acceptable salts may be used in the treatment and prophylaxis of herpes virus 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 October 13, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 12, 1988
GrantedOctober 13, 1998
Term endedOctober 13, 2015
Patent numberCA 1340084 C
Classification (IPC)C07D473/18 +1 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.