Method of producing a shaft prosthesis
CA 2001015 A1 · Owner: Neubert, Olaf · Inventors: Kranz, Curt; Ploetz, Wiebke; Botsche, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing a shaft prosthesis equipped with grooves, with the cutting paths for the grooves extending in planes which intersect in a common center axis. The tips of the cutting paths whose cross section has a wedge shape are oriented toward this center axis and the number of cutting paths falling into an angular region having its vertex on the center axis increases with increasing distance of the surface from the center axis. The cutting paths extend in close proximity to one another and the cutting is effected by means of a wedge-shape milling cutter which mills a prosthesis blank by completely removing its surface. The invention also relates to a prosthesis produced according …
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 October 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2011.
- 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.