Nonwoven fabric of water-soluble resin fibers
CA 1279452 C · Owner: Toa Nenryo Kogyo K.K. · Inventors: Fujii, Shigeo; Mori, Shoichi; Tabuchi, Jyoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nonwoven fabric of water-soluble resin fibers ABSTRACT OF THE DISCLOSURE, A nonwoven fabric consisting of water-soluble resin fine fibers having a mean fiber diameter of at most 30 µm and a basis weight of 5 to 500 g/m2 is produced by extruding an aqueous solution containing a water-soluble resin or a melt of a water-soluble resin plasticized with water through nozzles, comminuting the extruded material to form fibers by a high speed gas flow, heating the fibers to evaporate the water in the fibers and then collecting the fibers. TS-405(406)
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 January 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.