Microwave plasma nozzle with enhanced plume stability and heating efficiency
CA 2572391 C · Owner: Saian Corporation · Inventors: Lee, Sang Hun; Kim, Jay Joongsoo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Systems and methods for generating microwave plasma are disclosed. The present invention provides a microwave plasma nozzle (26) that includes a gas flow tube (40), and a rod-shaped conductor (34) that is disposed in the gas flow tube (40) and has a tip (33) near the outlet of the gas flow tube (40). A portion (35) of the rod-shaped conductor (34) extends into a microwave cavity (24) to receive microwaves passing in the cavity (24). These received microwaves are focused at the tip (33) to heat the gas into plasma. The microwave plasma nozzle (26) also includes a vortex guide (36) between the rodshaped conductor (34) and the gas flow tube (40) imparting a helical shaped flow …
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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 7, 2005 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 7, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.