Method and device for producing plasma
CA 2283410 C · Owner: Platzer, Bernhard · Inventors: Platzer, Bernhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for producing RF/HF induced low-energy plasma (17), in particular noble gas plasma, comprising a generator and a supply element for the plasma gas. The invention provides for the generator to be coupled in a known manner to two in particular ring- or disk-shaped parallel interspaced, electrodes (1), each having at least one through-opening and for at least one isolator (2) to be positioned between said electrodes (1), said isolator having at least one particularly circular through-opening (3) assigned to the through-opening of said electrode whose, through-opening (3) is designed to confine said plasma (17) formed by a plasma gas at a pressure of at least …
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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 March 3, 1998 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2020.
- 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.