Diamond-coated tools and process for making
CA 2173354 C · Owner: Oles, Edward J. · Inventors: Melago, William M.; Bauer, Charles Erik; Grab, George P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diamond-coated tool, (80) and a process for making it. The process includes a, sintering step. In that step the tool substrate is sintered in, an atmosphere and for a time and at a temperature so that, superficial exaggerated grain, growth is promoted that imparts a surface roughness which may, serve as anchoring sites during a subsequent diamond coating, step which is performed by a vapor deposition technique. The diamond-coated tool includes a large grain substrate, surface and a high bond, strength between the diamond coating and the substrate, surface.
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
- Filed March 4, 1994 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2016.
- 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.