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Expired Canadian patentCanada

Ultraviolet light treatment chamber

CA 2620780 C · Owner: Cooper, James Randall · Inventors: Cooper, James Randall

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

This invention relates generally to methods and apparatuses for the treatment of liquids and gases using ultraviolet light. In one embodiment a , substantially enclosed chamber coated with a reflective material containing an ultraviolet lamp and an ultraviolet transmissive tube running through the chamber for the treatment of liquid passed therethrough is disclosed.

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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 August 11, 2006 and granted March 10, 2020. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 11, 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.
FiledAugust 11, 2006
GrantedMarch 10, 2020
Term endedAugust 11, 2026
Patent numberCA 2620780 C
Classification (IPC)G01N21/00

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedAug 11, 2006Patent grantedMarch 10, 2020Term endedAug 11, 2026

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.