High speed and reliable determination of lumber quality using grain influenced distortion effects
CA 2355557 A1 · Owner: Lmi Technology Ltd. · Inventors: Dashner, Barry; Metcalfe, Leonard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a high speed electro-optical sensor system to determine quality of, objects, such as lumber, having complex structures such as grain knots and , the like. It, is particularly concerned with electro-optical sensors useful for this purpose, for, example those employing the tracheid or other grain induced distortion effects, or those, based on visually discernable defects due to contrast variation. Preferred versions use, computer processed data from TV cameras viewing laser spot illumination of boards.
Read the whole patent
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 23, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2023.
- 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.