Cement tile reinforced with fibers and a method for the production of the same
CA 1300918 C · Owner: Inukai, Yasuo · Inventors: Kamitani, Masataka; Kawaguchi, Takeshi; Inukai, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tile made of cement reinforced with fibers having, per 100 parts by weight of cement 0.3-7 parts, by weight of synthetic fibers as reinforcing materials and 200 parts by weight or less of an inorganic filler wherein the tile is in the shape of a wave with alternating hills and valleys, which run in the direction of the slope of the roof when it is installed on the building material of the roof that is under the tiles of a sloping roof, the valley of the tile being 5-30% thicker than the hill, and/or the undersurface except for the edges of the hills and valleys being, provided with a supporting stand and a method for the, manufacture of the said tile.
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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.