Cvd diamond burrs for odontological and related uses
CA 2214276 C · Owner: Del Bosco, Edson · Inventors: Del Bosco, Edson; Baranauskas, Vitor; Leite, Nelia Ferreira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of the invention is the process of obtainment of CVD diamond burrs mills and files of odontological and related uses for boring, abrading and , machining teeth glass, ceramics, metals, etc. The patent includes any CVD diamond deposition method and gas mixture. The CVD diamond may be deposited as a thin or thick film directly on the tool stick material or may be deposited , as a freestanding film on a substrate material for posterior joining to the tool stick, or the tool stick may be prepared by the deposition of diamond powder by any process, before a direct deposition of the CVD diamond
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 February 15, 1996 and granted April 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 2018.
- 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.