Hydroxylapatite gel
CA 2291677 A1 · Owner: Ivanov, Emil Stoimenov · Inventors: Kirov, Gueorgui Nikolov; Baumann, Arnulf; Jordanova, Magarita Nikolova
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a hydroxylapatite gel obtained through a sol-gel process, in which an alkaline aqueous solution of a calcium slat is reacted with an alkaline aqueous solution of a phosphate salt in a calcium and phosphorus molar ratio in the range of 1.67 to obtain a sol. The sol in then transformed into a gel by hydrothermal treatment. The hydroxylapatite gel thus obtained exhibits excellent properties for use as a binding agent in moldable hydroxylapatite materials, comprising a granular filling material containing calcium in addition to the gel. The filling material is also preferably a hydroxylapatite material. Shaped bodies can be obtained from the hydroxylapatite …
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 May 26, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2020.
- 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.