Sanitary napkin having convex upward shaped cross section
CA 2177675 C · Owner: The Procter & Gamble Company · Inventors: Bergman, Carl Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sanitary napkin having an elastic member for foreshortening the sanitary napkin in the lateral direction. The elastic member is joined to the absorbent core of the sanitary napkin and acts to provide a convex upwardly shaped cross section. The cross section may be an inverted U-shaped or a W-shaped cross section. The core of the sanitary napkin may be decoupleable from the backsheet.
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 December 15, 1994 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2016.
- 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.