Wood board, surface-decorated wood board, and manufacturing method therefor
CA 2136247 C · Owner: Yamaha Corporation · Inventors: Nagasima, Hironao; Yoshimura, Katsuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wood board 1, wherein irregularities 6 of the surface of an oriented strand board 2 in a laminated wood board 5 in which an oriented strand board 2 is laminated on a strand board 3 are filled with a putty 7, and smoothed. A surface-decorated wood board 10 in which a surface-decorative material 12 is applied to a smoothed surface of this wood board 1. Despite the fact that an oriented strand board 2 having large surface irregularities is employed as the surface layer it is possible to obtain a wood board 1 which has a smooth surface in which the wooden strand pattern is reduced and which has superior water and moisture resistance.
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 November 21, 1994 and granted September 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2016.
- 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.