Method for the production of a web of tissue material
CA 2713601 C · Owner: Voith Patent Gmbh · Inventors: Thoroe Scherb, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a machine for the production of a web of tissue material (12) comprising a material wind-on element or flow box (14) and an endless carrier belt 16) which is used to guide the web of tissue material (12) through a press gap (23)formed between a drying cylinder (18) and a counter unit (20) wherein said material wind-on element is a multilayered element with at least two different types of material being fed thereto. At the connection with the press gap the web of tissue material is wound on by means of a winding device (24). Preferably the hardness of the roll (80) thus formed is influenced in a predefined manner being controlled and/or regulated in particular. The …
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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 March 20, 2003 and granted August 6, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2025.
- 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.