Process for producing fuel pellets
CA 2573046 C · Owner: Cambi, As · Inventors: Holte, Hans Rasmus; Solheim, Odd Egil; Brusletto, Rune
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for production of fuel pellets from a biological material preferably , saw dust, wood or similar where the method comprises the following steps: supplying the material to a drying step (1) and dry the material to a relative humidity from 40-65 weight-percent to 30-45 weight-percent; supplying the material from the dryer step (1), optionally via an intermediate storage step (2), to a reactor step (3, 3') and heat the material to 200 - 300 ~C by supply of steam; keeping the material in the reactor at the achieved temperature in sufficient time to soften the material; reducing the pressure of the reactor step (3, 3') in at least two steps, in order to defibrate the material and …
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 June 16, 2005 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 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.