Polycrystalline diamond member and method of making the same
CA 2346945 A1 · Owner: Kennametal Inc. · Inventors: Oles, Edward J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polycrystalline diamond member (60) and a method for making the same. The member (60) includes a backing and a layer of polycrystalline diamond (64) on the backing (62) wherein the layer of polycrystalline diamond (64) has a rake surface (80) and a flank surface (82). The layer of polycrystalline diamond (64) has an interior region (68) adjacent to the backing and an exterior region (66) adjacent to the interior region (68) wherein the exterior region (66) terminates at the rake surface (80). The interior region (68) includes interior diamond particles (70) and a catalyst (76) with the interior diamond particles (70) being bridged together so as to form interstices therebetween. …
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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 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2021.
- 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.