Composite bone graft cement comprising calcium sulfate dihydrate and brushite
CA 2619469 C · Owner: Wright Medical Technology, Inc. · Inventors: Moseley, Jon P.; Mccanless, Jonathan D.; Carroll, Michael E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution including i) a , calcium sulfate hemihydrate powder having a bimodal particle distribution and a median particle size of about 5 to about 20 microns wherein the calcium , sulfate hemihydrate is present at a concentration of at least about 70 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; and iii) a .beta.-tricalcium phosphate powder having a median particle size of less than about 20 microns. Bone graft substitute cements made therefrom a bone graft substitute kit , comprising …
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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 September 8, 2006 and granted March 3, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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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.