Web-shaped semifinished product, in particular wall covering plaster, and process for producing the same
CA 2241069 A1 · Owner: Wedi, Helmut · Inventors: Wedi, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to obtain a semifinished product in particular a wall covering , plaster which behaves as applied plaster and is easy to produce process and , shape, an artificial resin mortar (11) is applied on a flat side (21) of a nonwoven strip (2) with a thickness from 0.05 mm to 3 mm and an air permeability from 500 l/m2.s to 4,500 l/m2.s. The artificial resin mortar (11) has the following composition in the non-hardened state: 50 to 90 wt % of a powdery component composed of finely granulated cement and finely granulated aggregates and 10 to 50 wt % of a liquid component with elastic properties as , well as a spreading value from 100-350 mm. Depending on an advance speed from 1 to 15 …
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 October 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2019.
- 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.