Dihydrocaffeic acid derivatives and pharmaceutical preparations containing same
CA 2024723 A1 · Owner: Yano, Osamu · Inventors: Yano, Osamu; Fukazawa, Nobuyuki; Miyama, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dihydrocaffeic acid derivatives are here disclosed which are applicable as medicines having excellent absorbency in the case of oral administration and good concentration retention in blood. The disclosed compounds have the function to induce the production and secretion of a nerve growth factor (NGF) in the brain tissue, and therefore they are effective as medicines for the progression inhibition and therapy of regressive disorders of the central nervous system.
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 6, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 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.
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.