Cellulose fiber-plastic composition containing a lubricant
CA 2584674 C · Owner: Tafesh, Ahmed M. · Inventors: Williams, Joseph B.; Tafesh, Ahmed M.; Jiang, Xiao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to an extrudable compound an extrusion method, and , an extruded product comprising a polymer a cellulosic fiber, and at least one , lubricant selected from the group consisting of esters of ethoxylated hydantoins, esters of ethoxylated sorbitol or sorbitan or N,N'-, bisalkanoylethylenediamines containing from 8 to 14 carbon atoms in each alkanoyl group. Extruded products manufactured according to the invention simulate conventional wood products. The invention is further directed to the use of N,N'-bisalkanoyl~ethylenediamines independently containing from 8 to 14 carbon atoms in each alkanoyl group and having a particle size from 90 to 150 ~m, preferably …
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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
- Filed November 8, 2005 and granted June 11, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.