Plasma jet chemical vapor deposition system having a plurality of distribution heads
CA 2277394 C · Owner: Simpson, Matthew A. · Inventors: Simpson, Matthew A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arc jet CVD system includes a plurality of plasma jet distribution heads. The distribution heads are preferably linearly arranged, preferably angled relative to a line normal to the substrate surface on which a diamond film is being coated and preferably spaced relatively apart with respect to a defined profile width. In addition, the plasma jets are preferably configured in accord with a defined parameter which is a function the reagent gas flow and viscosity, the distance between the distribution heads and the substrate, and the area on the substrate exposed to the gas from a distribution head. Configuring the plasma in accordance with the defined parameter-ensures an acceptable …
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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 July 15, 1999 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2021.
- 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
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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.