Method and apparatus for cleaning harmful gas by irradiation with gas laser and electron beams
CA 2253045 C · Owner: Park, Jin Ho · Inventors: Park, Jin Ho; Lee, Yong Hee; Park, Jin Kyu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for reducing harmful ingredients in gas by irradiating the gas with an electron beam. The apparatus comprising a voltage generating unit adapted to generate a high-frequency and high voltage signal and a reaction unit coupled to, the voltage generating unit to receive the high-frequency and high voltage signal, the reaction unit including an electron beam pole having a plurality of openings along the surface of the electron beam pole, and a plurality of discharge cells for each opening the, discharge cells being disposed to face the corresponding opening for generation of the electron beam therebetween the region, between the discharge cells and the openings defining a …
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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 November 6, 1998 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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
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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.