Diamond compacts and process for making same
CA 1289367 C · Owner: The Australian National University · Inventors: Ringwood, Alfred Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing a diamond compact having a compressive strength of at least 10 kbars the process, being performed in the graphite stability field at a maximum pressure of 40 kbars at a temperature of between 1100°C and 1600°C for a time which permits plastic deformation of the diamond crystals giving face-to-face contacts therebetween and a substantial or complete degree of chemical equilibration between the bonding agent and the diamond crystals. Bonding agents are selected from elements and alloys which produce a bond with diamond having a melting point above 1600°C and which inhibit the formation of free graphite in the compact.
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
- Granted September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.