Absorbent composite for use in absorbant disposable products
CA 2208409 C · Owner: Tredegar Film Products Corporation · Inventors: Potnis, Prasad S.; Francis, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The absorbent composite (14) comprises a three-dimensional formed film (30) having a planar surface (32) and three-dimensional surface (36) defining a plurality of cavities (34) or projections depending downwardly from a planar surface (32). A plurality of the cavities (34) or projections or spaces defined by the cavities contain at least one type of absorbent material (40). The composite (14) is useful in a fluid absorbent product having at least one liquid pervious layer (16) and at least one liquid impervious layer (12) where the absorbent composite is positioned between the liquid pervious layer (16) and the liquid impervious layer (12).
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 October 27, 1995 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 27, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2017.
- 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.