Lumber products formed of wood fibers and method of manufacturing these products
CA 1064809 A · Owner: Macmillan Bloedel Limited · Inventors: Barnes, Derek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A discrete dimensioned structural lumber product is disclosed which has greater strength to density ratio than previous structural lumber product. The product comprises adhesively bonded, substantially straight wood strands having lengths of at least 12 inches average widths, of 0.05 inch to 0.25 inch and average thickness of 0.05 inch, to 0.5 inch the strands being disposed, side by side lengthwise of the lumber product in substantially parallel relationship with adhesive bonding adjacent strands but with substantially no straight glue lines extending from one surface to the other of the product, the total amount of adhesive resin solids in the lumber product being from 1% to 5% by weight, …
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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 October 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 23, 1996.
- 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.