Polycrystalline diamond and cbn cutting tools
CA 1270654 C · Owner: General Electric Company · Inventors: Komanduri, Ranga
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RD 17,135, POLYCRYSTALLINE DIAMOND AND CBN CUTTING TOOLS ABSTRACT OF THE DISCLOSURE, A cutting tool comprised of an annular polycrystalline layer of diamond or cubic boron nitride integrally adhered to an annular recess in an upper peripheral portion of an integral cemented carbide substract structure, said layer having a round cutting edge, one face of the layer being adhered to the bottom surface of the recess and an innular annular side of the layer being adhered to the inner wall of the recess, the thickness of the polycrystalline layer and the height of the wall being substantially equivalent.
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 June 26, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 2007.
- 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.