Process and facility for reducing the water content bound in the capillaries of fibre cells
CA 2316663 A1 · Owner: Maschinenfabrik J. Dieffenbacher Gmbh & Co. · Inventors: Bielfeldt, Friedrich B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a process for reducing the water content bound in the capillaries of the fibre cells of milled solid matter and/or sludge that contains carbon, and which is processed through a screen to form a mat. The invention comprises the, following process steps:, 1) The material to be used is milled screened and distributed to several , spreading-material hoppers designated for several grain sizes and their grain size, distributions. 2) As a first layer a thin layer of fine material is scattered on a spreading, charging, and filter belt. As a second layer a thicker layer of coarse material is deposited, to form a sandwich mat, whereby the depositing of the respective pile …
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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 August 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2022.
- 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.