Method and apparatus for improving a batch cooking process
CA 2189296 C · Owner: Pursiainen, Seppo · Inventors: Koso, Arto; Pikka, Olavi; Turunen, Esko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An object of the present invention is a method and apparatus for improving a batch cooking process. A method and apparatus according to the invention are especially suitable for improving for example modern Superbatch and RDH processes, i.e. so called displacement batch cooking processes. Said improvement is related to discharging the cooked pulp from a digester. A method according to the invention is characterized by discharging the pulp from the digester (100) by pumping it by means of a discharge pump (110) arranged separately for each digester (110).
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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 October 31, 1996 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2018.
- 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.