Fire resistant fiber sheet, moldings thereof, and flame-retardant acoustical absorbents for automobiles
CA 2557352 C · Owner: Hirano, Morimichi · Inventors: Watanabe, Tsuyoshi; Hirano, Morimichi; Ogawa, Masanori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of the present invention is to provide a fiber sheet having good fire , resistant property, an expanded synthetic resin sheet having good fire resistant property and a molded article thereof and a fire resistant acoustic , material for cars which uses the molded article. To attain the object in the present invention, fire retardant capsules are adhered to the fiber sheet or the expanded synthetic resin sheet to provide a porous fire resistant sheet. When the fire retardant capsules are exposed to a high temperature, the synthetic film covering the fire retardant may break exposing fire retardant, and giving fiber sheet or expanded synthetic resin sheet self extinguishing …
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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 February 8, 2005 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.