Alloyed tungsten produced by chemical vapour deposition
CA 2582573 C · Owner: Aleksandrov, Sergey · Inventors: Aleksandrov, Sergey; Zhuk, Yuri; Lakhotkin, Yury
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wear-, erosion- and chemically-resistant material containing tungsten alloyed with carbon, the carbon being present in an amount of 0.01 wt% up to 0.97 wt% of the total weight, wherein the material preferably comprises a matrix of metallic tungsten with dispersed tungsten carbide nanoparticles having a particle size not greater than 50 nanometres preferably not greater , than 10 nanometres. The material is optionally also alloyed with fluorine the , fluorine being present in an amount of 0.01 wt% up to 0.4 wt% of the total weight. The material is extremely hard and tough.
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 11, 2005 and granted December 3, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2025.
- 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.