Mt cvd process
CA 2360713 A1 · Owner: Undercoffer, Kenneth E. · Inventors: Undercoffer, Kenneth E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention comprises a method for coating at least one substrate with a carbonitride-containing coating by a MT CVD process which includes heating a substrate (52) or substrates (52) to a reaction temperature in a reaction chamber (10) and then introducing into the reaction chamber (10) a deposition process gas comprising from about 1 to about 30 % of a hydrogen halide and predetermined amounts of a carbon/nitrogen source a metal-halogen , compound, H2, and optionally N2 so that a layer of the carbonitride-containing coating deposits (48) on the surface of the substrates (52) or substrates (52). The present invention also includes embodiments for coating at least one …
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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, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 2022.
- 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.