Canadian application, no grantCanada
Improving memory by the administration of .delta.5-androstene-3.beta.-ol-7,17-dione and 3.beta. esters thereof
CA 2344677 A1 · Owner: Shi, Jennifer Y. · Inventors: Shi, Jennifer Y.; Lardy, Henry 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
The memory of a healthy mammal and the memory of a mammal with age impaired memory can be improved by administering an effective amount of .DELTA.5- Androstene-3.beta.-ol-7,17-dione and 3.beta. esters thereof.
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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
- Filed October 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 13, 1999
GrantedNo grant recorded
Term endedOctober 13, 2019
Patent numberCA 2344677 A1
Classification (IPC)A61K31/56 +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.