Foam-fiber composite and process
CA 1303829 C · Owner: Dabi, Shmuel · Inventors: Chinai, Kays B.; Dabi, Shmuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foam-fiber composite, useful as an absorbent for sanitary napkins is disclosed. It is a resilient absorbent structure, made from large particles of an amino-ether hydrophilic foam (and optionally a superabsorbent and wood pulp) which by use, of a carding machine is uniformly distributed in and heat, bonded to a fibrous matrix, which matrix is preferably made from two different kinds of fibers, one of which is low melting at the bonding temperatures used in the oven e.g. polyethylene and the other high melting e.g. t polyester.
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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 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.