Prostaglandin-containing liposome preparations
CA 2024804 A1 · Owner: Matsuda, Hiroshi · Inventors: Matsuda, Hiroshi; Yamanouchi, Koichi; Ueda, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The prostaglandin-containing liposome preparations which are characterized in that positive-charged lipid(s) is (are) incorporated in lipid thin membrane therein are discussed and according to the present invention release of prosta-, glandins from liposomes can be suppressed.
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.