Absorbent composite having improved surface dryness
CA 2400507 A1 · Owner: Weyerhaeuser Company · Inventors: Graef, Peter A.; Marsh, David G.; Grant, Terry M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an absorbent composite having improved surface dryness. The composite has three strata with adjacent strata separated by a transition zone. The composite's first stratum includes synthetic fibers and provides the composite with improved surface dryness. Methods for forming the composite and absorbent articles that incorporated the composite are also provided.
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 March 23, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2023.
- 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.