Synthetic diamond wear component and method
CA 2202225 C · Owner: Saint-Gobain Industrial Ceramics, Inc. · Inventors: Olson, James M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diamond film coated wear part, comprising a part a first layer of, polycrystalline diamond film grown on said part with non-{100} crystallographic faceting, a second layer of polycrystalline diamond film on said first layer, said second layer of polycrystalline diamond film having {100} crystallographic faceting, said second layer having a thickness sufficient to overgrow the roughness of said surface of said first layer with a continuous film. A method for making the diamond film coated wear part comprises the steps of providing the part; depositing a first layer of polycrystalline diamond film on said part with non-{100} crystallographic faceting; depositing on the surface of said first …
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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 April 9, 1997 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2019.
- 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.