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Expired Canadian patentCanada

Decorative surface covering with geometric patterns and colored particles

CA 1315547 C · Owner: Armstrong World Industries, Inc. · Inventors: Wertz, Ann Murdoch; Dorsey, William Charles

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Abstract of the Disclosure, A surface covering product is disclosed which comprises a substrate material, a granular material layer and discrete elements pressed into the granular material The granular material appears as colored partlcles of material in the area around the discrete elements and are partially visible through the discrete elements because of their positioning below the discrete elements.

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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 April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 10, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315547 C
Classification (IPC)B44F5/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 10, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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