Heterogeneous apertured film for absorbent articles
CA 2402067 A1 · Owner: Johnson, Bruce · Inventors: Roller, Judith; Gell, Carol; Johnson, Bruce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heterogeneous apertured film wrapping element for an absorbent article is disclosed. The fluid-impervious plastic material that forms the apertured film has a continuous phase of a thermoplastic polymeric component and an immiscible, dispersed phase of a thermoplastic polymeric component having a lower melting point. The wrapping element is useful in applications involving heat sealing and similar thermal processes in absorbent articles such as , sanitary napkins, diapers, bandages tampons, and the like.
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 January 18, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 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.