Method for identifying timber surface properties
CA 1300922 C · Owner: Altim Control Oy · Inventors: Hirvonen, Kullervo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for identifying timber surface properties using linearly polarized electromagnetic radiation containing various different wavelength components. Of the scattered radiation are measured by wavelength ranges the intensity components Imin and Imax that are mutually perpedicular as regards their polarization plane, wherein the polarization plane of the component Imax is the same as that of the radiation directed to the surface. The identification of the surface types is made on the basis of the information about the colour tone of the surface and the fiber structure achieved from the variables Imin and P= (Imax - Imin)/ \ Imax + Imin).
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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
- Granted May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.