A system for treating contaminated air with uv-light
CA 2612874 C · Owner: Lejondahl, Lars-Erik · Inventors: Lejondahl, Lars-Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating an air stream that is contaminated with organic substances, comprising irradiating the contaminated air stream with UV-light emitted from UV- lamps wherein the UV-lamps have a , given length of life (T1) which is determined by the decrease of the set UV-radiation in accordance with a first function (F1) from a starting state when setting the method into operation (E1) to a smallest theoretically acceptable value (E2).The UV-lamps shall be cleaned at a time interval (T2) that is determined by the reduction of the actual set radiation to a smallest desired value (E3). The lamps are cleaned at time intervals (T2) calculated with the aid of - the value of the …
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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 June 14, 2006 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2026.
- 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.