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Expired Canadian patentCanada

Composite sheet material for use in covering walls, and a method of manufacturing same

CA 1071517 A · Owner: Compagnie Des Etablissements De La Risle-Papeteries De Pont-Audemer · Inventors: Failliot, Olivier

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A highly absorbent and fragile composite sheet normally used as a throwaway domestic wiper is quickly and easily converted to a strong and attractive colored wallcovering. Thus, a composite layer comprising a net material sandwiched between and bonded to a pair of cellulosic-fleece (wadding) layers has a carrier sheet of paper bonded thereto, has colorant applied thereto and is impregnated with a synthetic resinous bonding medium so that the fleece layers are bonded together at the mesh openings of the net material. In a preferred construction, the carrier sheet of paper has an internal cohesion inferior to that of the composite layer so that with the covering of the wall the composite …

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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

  • Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 12, 1980
Term endedFebruary 12, 1997
Patent numberCA 1071517 A
Classification (IPC)B32B3/12 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 12, 1980Term endedFeb 12, 1997

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.