Cemented carbide body containing zirconium and niobium and method of making the same
CA 2532453 C · Owner: Wolf, Manfred · Inventors: Heinrich, Hans-Wilm; Schmidt, Dieter; Wolf, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sintered cemented carbide body (e.g. a cutting tool) and a method of making the same. The sintered cemented carbide body includes tungsten carbide a , binder phase of at least one metal of the iron group or an alloy thereof and , one or more solid solution phases. Each one of the solid solution phases has at least one of the carbides and carbonitrides of a combination of zirconium niobium, and tungsten. The method includes the steps of providing a powder mixture that contains tungsten carbide a binder metal powder comprising at , least one metal of the iron group or an alloy thereof and at least one of the , carbides and carbonitrides of both zirconium and niobium including a powder of …
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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 October 6, 2004 and granted June 19, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2026.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.