Method for controlling consistency of papermaking pulp
CA 2277082 A1 · Owner: Loippo, Kimmo · Inventors: Loippo, Kimmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A procedure for adjusting the consistency of paper pulp in which procedure: , allowed minimum and maximum values are defined for the consistency of head box pulp and/or for the consistency of the tail liquid coming from the wire dehydrators (14, 15), the consistency of the pulp entering the head box (13) is measured by means of measuring element (4) and/or the consistency of the tail liquid coming from the wire dehydrators (14 15) is measured by means of , measuring element (5). Based on the measurement data of at least one consistency measurement and controlled by a control apparatus (8) liquid or , pulp of desired consistency is supplied via a consistency regulating liquid line (1) …
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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 January 7, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2020.
- 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.