Installation and method for producing paper pulp, lignins and sugars
CA 2606543 C · Owner: Benjelloun Mlayah, Bouchra · Inventors: Benjelloun Mlayah, Bouchra; Delmas, Michel; Avignon, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention proposes an installation (10) in which the impregnation and fractionation of the raw material (MP) are conducted at atmospheric pressure characterized in that it comprises means (18 20) for transferring the raw , material (MP) successively to a first treatment station (PT1) and a second treatment station (PT2), each comprising means (G1 G2) for temporarily , combining, at the first station (PT1) the raw material (MP) with a quantity of a first mixture of organic acids and at the second station (PT2), for , temporarily combining the raw material (MP) with a quantity of a second mixture; and means, after impregnation for at least partially recovering the quantity of second …
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 April 20, 2006 and granted June 4, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2026.
- 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.