Method for determining water content of a material and measuring device
CA 2469398 A1 · Owner: Cariou, Jacques · Inventors: Cariou, Jacques; Ferrari, Estelle; Gendron, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for determining the water content (Wv%) of a material (12) using electromagnetic waves comprising the following steps: , applying an electromagnetic wave; measuring the propagation time (T) of a surface electromagnetic wave (26) between two points (10 28); calculating the , dielectric constant (.epsilon.') of said material (12) on the basis of said propagation time (T); determining the dry density (.gamma.d) of the material (12); and calculating the water content (Wv%) of said material (12) from the dielectric constant (.epsilon.') and said dry density (.gamma.d). The invention also concerns a device for determining water content (Wv%) using two …
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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 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2024.
- 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.