Repair of edge defects in boards of lumber or the like
CA 2014241 C · Owner: Cortese, Thomas F. · Inventors: Cortese, Thomas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Boards of lumber or similar material having knotholes or other defects in an edge region are repaired by cutting an opening in the edge region to remove the defect and by filling the opening with a conforming plug formed of hardened mastic or of pieces of solid material which are adhered together. The opening extends inward from the edge of the board and is of greater extent at a location spaced inward from the edge than it is at another location that is closer to the edge. The expanse of the opening preferably increases at a first depth within the board and decreases at a second depth within the board. The configuration of the opening interlocks the conforming plug into the board thereby …
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 April 10, 1990 and granted January 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2012.
- 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.