Reinforced nonwoven fire blocking fabric, method for making such fabric, and articles fire blocked therewith
CA 2557605 C · Owner: E. I. Du Pont De Nemours And Company · Inventors: Bascom, Laurence N.; Knoff, Warren F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a thin reinforced nonwoven fabric for fire blocking an article, articles containing such fabrics and methods for making the , fabrics and fire blocking the articles. When exposed to heat or flame the , fabric is capable of increasing its thickness by at least three times. The fabric comprises an open mesh scrim having a having crimped heat-resistant , organic fibers compressed thereon and held in a compressed state by a thermoplastic binder. When subjected to high heat or flame the binder in the , structure softens and flows releasing the restrained crimped fibers and allowing the thickness of the fabric to increase dramatically.
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 March 21, 2005 and granted October 2, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 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.