Laminated sheet for house wrap material and roof underlay sheet
CA 2353157 A1 · Owner: Chori Co. Ltd. · Inventors: Hatta, Nobuo; Tadokoro, Masami; Araida, Yasurou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The laminated sheet of the present invention comprises (A) a nonwoven fabric having a basis weight of 30 g/m2 or less made of polyolefin-based ultrafine fibers of 5 µm or less in average fiber diameter; (B) a heat-bonding nonwoven fabric having a basis weight of 15 g/m2 or less made of thermoplastic elastomer ultra-fine fibers of 15 µm or less in average fiber diameter; and (C) a, spun-bonded nonwoven fabric having a basis weight of 30 g/m2 or more made of thermoplastic polymer fibers. The nonwoven fabric A and the spun-bonded nonwoven fabric C are face-bonded via the heat-bonding nonwoven fabric B. The laminated sheet is excellent and well-balanced in a wind breaking performance, a water …
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
- Filed July 16, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2023.
- 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.