Dispersible absorbent products having a multi-layered structure and methods of manufacture and use
CA 2444453 A1 · Owner: Noda, Isao · Inventors: O'Donnell, Hugh Joseph; Noda, Isao; Gross, Sarah Beth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispersible absorbent product having a mechanically weakened multi-layered structure, which comprises at least two mechanically weakened layers joined by a water responsive binder. The mechanically weakened regions enhance the dispersibility of the product in a standard toilet. Additionally the , dispersible absorbent products may be pre-moistened with a composition. The pre-moistened products are stable in storage easily dispersible down a , toilet, and deliver cleaning conditioning, and like benefits. Methods of making such dispersible absorbent products are also disclosed.
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 April 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2024.
- 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.