Method of manufacturing composite board
CA 2429462 A1 · Owner: Mill'S Pride, Inc. · Inventors: Singer, Larry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite board is made from waste medium density fiber (MDF) board or waste particle board that includes solid urea formaldehyde. The waste board is, chopped and milled into particles having a size between 20 mesh and 150 mesh creating a waste flour. After removing moisture from the waste flour the , dried, waste flour is mixed with a thermoplastic to bind and encapsulate the waste flour. Internal lubricants are added to improve the flow characteristics of the blended, material, and external lubricants are added to present sticking of the mixture to an, extruder or mold. Mineral fillers are added to improve the flexural modules of the, composite board, and a plasticizer can be added …
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 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2025.
- 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.