Production of ethanol
CA 1110986 A · Owner: Alfa-Laval Ab · Inventors: Keim, Carroll R.; Dahlberg, Bengt I.; Ehnstrom, Lars K.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a production of ethanol in plants comprising a, fermenter, a centrifugal separator for the recirculation of the yeast to the fermenter and a plant for the separation of a yeastfree flow, coming from the centrifugal separator into one flow, rich in ethanol, and into one residual flow the substrate, that, is fed to the fermenter must be rid of solid substance like fibres, etc. In the separation of such solid substance a certain amount of substrate has been lost according to the methods utilized hitherto, or an unnecessarily high consumption of water and energy has occurred. According to the invention the solid substance, which is separated from the raw material flow is washed, 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
- Granted October 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 1998.
- 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.