Ultrahard composite constructions
CA 2537726 C · Owner: Griffo, Anthony · Inventors: Griffo, Anthony; Eyre, Ronald K.; Belnap, John Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ultrahard composite constructions comprise a plurality of first phases dispersed within a , matrix second phase wherein each can comprise an ultrahard material including PCD, PcBN, and mixtures thereof. The constructions are formed from a plurality of granules , that are combined and sintered at HP/HT conditions. The granules include a core , surrounded by a shell and both are formed from an ultrahard material or precursor , comprising an ultrahard constituent for forming the ultrahard material. When sintered, the , cores form the plurality of first phases and the shells form at least a , portion of the second phase. The ultrahard material used to form the granule core may have an …
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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 February 24, 2006 and granted August 6, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 24, 2026.
- 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.