The production of tissue paper or porous batt using a papermachine screen
CA 1268373 C · Owner: Albany International Corp. · Inventors: Borel, Georg; Waldvogel, Hartmut; Waldvogel, Hartmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A papermachine screen for the production of tissue paper or porous batt is described. The screen is formed of a fine upper fabric lager and a coarser lower fabric layer. Both fabric layers have a large open area. The two fabric lagers are suitably firmly interconnected to that the upper fabric layer exhibits depressions at the sites of interweaving which are arranged in a pattern. The papermachine screen is especially suited as embossing fabric for after-drying the paper web coming from a sheet forming fabric, or as second sheet former of a twin wire former. -17-
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
- Granted May 1, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 1, 2007.
- 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.