A method of estimating timber stiffness profiles
CA 2409496 A1 · Owner: Desmond, Christopher Anthony Gerard · Inventors: Andrews, Michael Kenneth; Desmond, Christopher Anthony Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to methods and apparatus for estimating stiffness or elasticity profiles across timber. This involves measuring a velocity of a plane compression wave propagating in the timber determining density , information relating to the timber and estimating an initial elasticity profile. A reiterative process is then conducted whereby a revised elasticity profile is determined using the density information and initial elasticity profile. The revised elasticity profile is then used to determine how the timber is utilised.
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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 April 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 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
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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.