Methods of designing embossing dies and making wood composite products
CA 2096322 C · Owner: Ou, Nian-Hua · Inventors: Ou, Nian-Hua; Vaders, Dennis H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods are provided for the design of backing dies utilized with front, decorative embossing dies for the simultaneous production and embossing of wood composite panels. The methods apply where more than one decorative pattern is embossed onto the wood composite panels during a single press cycle. The cross-sectional area or volume of the panels impressed with each different decorative pattern forms the basis for the methods of the design. Included are methods of forming wood composite panels using dies made according to the disclosed die design methods.
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 May 14, 1993 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2015.
- 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.