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Expired Canadian patentCanada

Light absorption method of measuring the concentration of an aqueous conveyor lubricant

CA 2589073 C · Owner: Theyssen, Holger · Inventors: Theyssen, Holger; Grober, Stefan

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Abstract From the Canadian patent

The present invention is directed to a method of lubricating a conveyor system comprising i) diluting a conveyor lubricant concentrate with water to obtain an aqueous conveyor lubricant with the concentration c, ii) irradiating an aqueous conveyor lubricant with light, iii) determining the concentration c of the aqueous conveyor lubricant by measuring the absorption of the light by the aqueous conveyor lubricant with an absorption detector and iv) applying the aqueous conveyor lubricant to the conveyor system. The present invention further relates to a conveyor lubrication system including a measuring device with a light source and with an absorption detector for measuring 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 December 15, 2005 and granted April 22, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 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.
FiledDecember 15, 2005
GrantedApril 22, 2014
Term endedDecember 15, 2025
Patent numberCA 2589073 C
Classification (IPC)C10M173/02 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedDec 15, 2005Patent grantedApril 22, 2014Term endedDec 15, 2025

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