Expired Canadian patentCanada
Use of arachidonic acid for normalization of infradian rhythm
CA 2514524 C · Owner: Ono, Yoshiko · Inventors: Akimoto, Kengo; Kawashima, Hiroshi; Nagai, Katsuya
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition having a normalizing action for infradian rhythm and/or a synchronization promoting action for circadian rhythm (biological clock) containing arachidonic acid and/or an arachidonic acid-containing compound.
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 March 26, 2004 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 2004
GrantedJuly 10, 2012
Term endedMarch 26, 2024
Patent numberCA 2514524 C
Classification (IPC)A61K31/20 +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.