Hyaluronan product and process for manufacturing thereof
CA 2389870 A1 · Owner: Bio-Hyos Ab · Inventors: Akerblom, Jim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a chemically unmodified hyaluronan product which has a high molecular weight of 9-25 million Daltons and a zero shear viscosity from 5 to 30 billion mPa s. This unique product is durable and at the same time viscoelastic, and perfectly compatible within the biocompatible materials, for instance, as a cartilage substitute and as an intervertebral disc. The invention also relates to a process for manufacturing of said product.
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 November 7, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2022.
- 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.