Floorcoverings having built-in heater
CA 1232313 A · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Kuwabara, Nobumori; Horikawa, Toshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The invention provides a floorcovering having a built-in heater which comprises a planar sandwich structure including an underlining layer of heat insulating material, at least one heating element provided on one surface of the underlining layer an, electric conductor provided on the one surface of the underlining layer so as to cover the heating element a, surfacing layer overlaying the conductor on one side of the heating element opposite to the underlining layer and, a lead wire for connecting the conductor to the ground. The electric conductor layer is thus grounded so that short circuits between it and the heating element do not represent a danger to persons in contact with …
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 February 2, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2005.
- 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.