Soft, absorbent material for use in absorbent articles and process for making the same
CA 2384508 A1 · Owner: Rayonier Products And Financial Services Company · Inventors: Harlen, Steven Scott; Sumner, Kimberly W.; Tan, Erol
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent material (20, 300, 400, 520) is provided with improved characteristics. A process is provided for making the absorbent material. A web is formed with at least one layer of absorbent material and it may , include a mixture of cellulosic fibers (32 532) and superabsorbent material , (40 540). The moisture content of the web is increased so as to increase the web density. Then, the web is compacted at an elevated temperature to further increase the web density and preferably to also effect hydrogen bonding within the web. In one embodiment a tissue layer (22 522) is provided, is wetted , with water and is bonded to the layer of absorbent material.
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 August 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 2022.
- 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.