Hyaluronic acid oligosaccharide fractions and drugs containing the same
CA 2414211 C · Owner: Masa, Takahiro · Inventors: Asari, Akira; Kurihara, Hitoshi; Tawada, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hyaluronic acid oligosaccharides having a size selected from sizes of 4 to 60 saccharides fractions , containing the hyaluronic acid oligosaccharides and having particular physicochemical properties, and drugs containing the same. The hyaluronic acid oligosaccharides of the present invention are extremely useful because , they exert superior pharmaceutical effects as active ingredients of a heat shock protein expression promoter cell death inhibitor, cell injury inhibitor and cell and tissue protecting agent (e.g. organ preservation agent antiulcer agent, antihepatopathic agent IL-10 production , promoter or IL-8 production inhibitor) and exhibit high safety.
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 July 6, 2001 and granted August 2, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2023.
- 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.