Root canal instrument having an abrasive coating and method for the production thereof
CA 2551583 C · Owner: Mannschedel, Werner · Inventors: Mueller, Barbara; Mannschedel, Werner
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 root canal instrument (1) which has a core (7) of a flexible elastic material having shape memory. The core furthermore has a coating with abrasive particles. For the purpose the core itself is made from a nickel-titanium alloy or from a plastics material preferably a carbon-fibre-reinforced plastics material the flexibility of the coating being matched to the flexibility of the core.
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 July 7, 2006 and granted January 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 7, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.