Absorbent article
CA 1297638 C · Owner: Miyashita, Iwao · Inventors: Shiba, Daisuke; Miyashita, Iwao; Sakurai, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbing article comprises a non-woven fabric layer comprising a surface layer to be in contact with skins containing from 60 to 100% by weight of first fibers having a hydrophilic surface and a hydrophobic inside and from 40 to 0% by weight of second fibers which are hydrophilic at least at their surface, and a rearface layer containing from 0 to 50% by weight of said first fibers and from 100 to 50% by weight of said second fibers, in which the surface hydrophilicity of said second fibers, after being wetted is greater than, said first 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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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.