High oxidation resistant hard coating for cutting tools
CA 2569860 C · Owner: Derflinger, Volker · Inventors: Endrino, Jose; Derflinger, Volker; Gey, Christoph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inventive workpiece features on at least parts of its surface a wear resistant hard coating comprising the following composition Al1-a-b-c-d Cra Xb SicBd Z, where x is at least one element from Nb Mo, W or Ta; Z is one , element or compound from N C, CN, NO, CO, CNO; and 0.2 <= a <= 0.5; 0.01 <= b <= 0.2; 0 <= c <= 0.1 ; 0 <= d <= 0.1. Further a PVD process for depositing such a wear resisitant coating is disclosed whereby at least one workpiece is installed in a vacuum coating system and said system is operated in a low pressure argon atmosphere utilizing at least two metal or metal alloy targets with at least temporarily addition of a reactive gas.
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 14, 2005 and granted January 20, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 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.