Double wire former with locally adjustable dewatering slat
CA 2106355 A1 · Owner: J. M. Voith G.M.B.H. · Inventors: Egelhof, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A double wire former for producing a fiber web specifically a paper web, from a fiber suspension. The double wire former includes two wires which together form a double wire, at least one double wire dewatering zone and at least one dewatering slat in the double wire dewatering zone. The at least one dewatering slat is provided with a number of adjustment devices across the width of the paper web which influence limited in width, the position of the contact surface of the dewatering slat.
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 September 16, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2015.
- 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.