Process for the production of a multi-coloured floor covering
CA 1189778 A · Owner: Graab, Gerhard · Inventors: Heckel, Klaus; Kuhl, Hans-Michael; Graab, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of a multi-coloured floor covering. A process for the production of a floor covering having a lower layer of polymer material that penetrates through the upper layer in surface areas distributed in a pattern, in which the upper and the lower layer are pressed together and bonded so as to form one structure and in which the upper layer in the above mentioned surface areas is removed characterized in that the upper, layer is manufactured from a material which in the conditions of the press exhibits a greater viscosity of flow than the material used in the lower layer removal of the upper layer in the surface areas is carried out before the upper layer is pressed …
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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 July 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2002.
- 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.