Bone substitute material for medical use and method for producing the same
CA 2529418 C · Owner: Nakagawa, Masaharu · Inventors: Udou, Kouichi; Ishikawa, Kunio; Matsuya, Shigeki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a bone substitute material for medical use which satisfies all , the requirements of (1) no histotoxicity (2) osteoconductivity, (3) bone , replacement capability, and (4) mechanical strength necessary for a bone reconstruction operation. , The bone substitute material for medical use is predominantly composed of carbonate , apatite and produced through the formation of carbonate apatite by contacting a block , of calcium compound with a phosphate-containing solution wherein the calcium , compound block contains substantially no powders and at least one of said , calcium , compound block and said phosphate solution contains a carbonate group without , any , …
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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 June 22, 2004 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 22, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 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.
Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.