Floor laying material, piece mat, and arranging structure thereof
CA 2473174 A1 · Owner: Hayashi Engineering Inc. · Inventors: Imamura, Masahito; Nakamura, Toshiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A floor laying material whose sound absorbing property and sound insulating property are optimized; a piece mat; and an arranging structure thereof. A floor laying material (10) comprises a carpet layer (11) having joining strips (11a) of thermoplastic resin discontinuously arranged on the back surface thereof, and a cushion material layer (12) laminated to the back surface of the carpet layer (11) through the joining strips (11a). The carpet layer (11) has its front-to-back flow resistance value adjusted to be between 100 Nsm-3 and 1000 Nsm-3. Further, the cushion material layer (12) is made of a raw material having an air wrapping property and has its front-to-back flow …
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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
- Filed October 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2024.
- 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.