Breathable backsheet design for disposable absorbent articles
CA 2203653 C · Owner: Depner, Michael · Inventors: Divo, Michael; Depner, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to disposable absorbent articles such as baby diapers or sanitary napkins having a breathable yet liquid leakage retarding backsheet which comprises an inner and an outer layer. The inner layer being closer to the absorbent structure of the article is a formed film with directional liquid transport characteristics while the outer layer is a fibrous fabric.
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 16, 1995 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 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.