Hygienic absorbent article having blended absorbent core
CA 2129359 C · Owner: Ahr, Nicholas Albert · Inventors: Ahr, Nicholas Albert; Noel, John Richard; Osborn, Thomas Ward, Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent article, such as a diaper sanitary napkin (20), adult incontinent device which have absorbent cores (32) comprised of blends of different types of fibers are provided. The absorbent articles preferably comprise a liquid pervious topsheet (28), a liquid impervious backsheet (30) joined to the topsheet a blended absorbent core positioned between the topsheet and the backsheet, and an acquisition layer (34). The absorbent core positioned a homogeneous blend of fibers comprising a first group of short, low denier, hydrophilic fibers and a second group of longer higher denier, moisture insensitive synthetic fibers. The first group of fibers is selected from a group comprising …
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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 December 9, 1992 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2014.
- 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.