Roll-coating machine for application of staining colors onto a paper web
CA 2090064 A1 · Owner: J. M. Voith G.M.B.H. · Inventors: Beisswanger, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a roll-coating machine for the application of staining colors onto a paper web including:, a coating roll that rotates in a staining color pool;, a trough retaining the color pool and having a staining color inlet, a guide wall with a first overflow edge, and an overflow channel for a first overflow stream;, a mating roll that rotates in a direction opposite to that of the coating roll and with it forms an inlet gusset and an outlet gusset; and, a drawbar that has a second overflow edge on its downstream end for a second overflow stream a bypass, channel for division of the second overflow stream and having a valve, and a restrictor defined by the drawbar in …
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 February 22, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 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.