Floor structure
CA 1281237 C · Owner: Fujii, Hideichi · Inventors: Fujii, Hideichi; Nakano, Kiyomori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A floor structure comprising an upper layer containing a hydroxide, a middle layer for providing the structural strength and the lower layer covering the lower surface, in which at least the middle layer and the lower layer are composed of flame-retardant material and the layer of heat insulating material is formed therebetween. The floor structure is excellent in the fire-resistance and heat-resistance, as well as it can facilitate the mounting of equipments or the likes below the floor.
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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
- 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.