Paper machine for the production of tissue paper
CA 2101401 C · Owner: J. M. Voith Gmbh · Inventors: Goncalves, Rui; Meinecke, Albrecht; Steiner, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to a paper machine for the production of a fiber web, including, a headbox for forming the fiber web. Disposed adjacent the headbox is either a dewatering unit. e.g. a dewatering cylinder a double wire former or a fourdrinier wire section. Also provided are, at least one press unit for dewatering the fiber web a tissue drying cylinder , for finish drying the fiber web, a device for fiber web pickup from the tissue drying cylinder (Yankee cylinder), e.g. a creping doctor or a Clupak device and a carrier belt for carrying the fiber web. At least one of, the press units is configured as a shoe press for drying the fiber web and , includes a device for, …
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 July 27, 1993 and granted June 13, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 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.