Heavy-weight nonwoven fabric of hydraulically- entangled fibers
CA 1234967 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Kirayoglu, Birol
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Heavy-Weight Nonwoven Fabric of Hydraulically-Entangled Fibers, ABSTRACT An improved heavy-weight, nonapertured nonwoven fabric of hydraulically entangled synthetic organic staple fibers has a unit weight of 200 to 850 g/m2 6 to 25 oz/yd2, a strip tensile strength of at least 0.26 (N/cm2/(g/m2) 5 (lb/in)/ (oz/yd2), and a resistance to disentanglement of at least 50 alternate extension cycles. The fabric is much stronger than such prior art heavy-weight nonwoven fabrics of hydraulically entangled staple fibers.
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
- Granted April 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
- 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.